10 Best Air Purifier For Kitchen & Cooking Odors 2021

Cooking can be most fun during these stay at home or work from home days, of course, you have to keep your kids, partners and yourself pleased as well as engaged all day long but yes there is this smell that keeps lingering throughout which at times is very unpleasing.

An air purifier might not only help keep your kitchen odor-free but also your home environment hygienic and unpolluted.

Keeping smells and stinks at bay is a mission when handling a kitchen either it’s home-based, a cafe, an eatery, or even a fast-food chain because these kitchen odors sometimes become nauseating and for some, they can even cause a loss of appetite.

10 Best Kitchen Air Purifiers For Cooking Odors Reviews 2021

This article will enlighten you on the significance of this modern gadget and will guide you through making the right buying decision with everything you need to know about the right air purifier.

So, let’s see.

1. KC-850U Sharp Triple Action Air Purifier

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The KC-850U is a Triple-Action exclusive and patented Plasmacluster technology Air Purifier from Sharp with an additional humidifying function and it can easily purify a medium-sized room of up to 254 square feet.

With an exclusive combination of air treatment technologies and the humidifying function, KC-850U will make you and your family more relaxed, throughout all seasons.

Sharp’s KC-850U is an extremely quiet air purifier with a noise level as low as 19 decibels (dBA). However, with the maximum fan speed, the noise level of the air purifier can reach up to 50 decibels (dB). Conversely, when turned up with the humidifier function, it can be pretty noisy, as high as 60 decibels.

Sharp KC-850U features a very basic 3 stage air FILTRATION System:

The 1st washable pre-filter easily traps all dust and other large airborne particles that pass through the filters. 2nd is the Activated carbon deodorizing filter which removes all odors like kitchen smoke and household chemical smells that pass through the filters.

And the TRUE HEPA filters effectively remove 99. 97%, 0.3 microns, and larger particles like pollen, animal dander, smoke, germs, bacteria, mold, and fungus from the air that passes through the filter.

This air purifier is AHAM Verified and Tested in 17 tests by laboratories around the world including the USA, U. K, Germany, Japan, South Korea, China, and Vietnam, and has been proven effective in reducing certain viruses and bacteria; certain common kitchen molds and fungus, and most odors including kitchen odors that orthodox filters won’t reach.

Sharp’s Plasma cluster Ion Air Purifier is capable to confiscate static electricity and can decompose the protein and subdue activity of the viruses and is not only ARB Certified but is also very safe to use as it produces 5X less ozone which is much lower than the FDA, OSHA and NIOSH standards.

Additionally, the Plasmacluster Technology, which can reduce the number of pollutants at an advanced level, can also be switched on/off as per requirement. And since the TRUE HEPA filters are long life, they require changing only every 2 to 5 years, lowering down the operating costs.

Furthermore, being Energy Star rated, it will run only at 3.5 watts for the lowermost setting; however the power consumption at the highest setting is also only 50 watts.

2. Alen BreatheSmart 75i Air Purifier

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The Alen BreatheSmart 75i is a quiet yet powerful air purifier that is perfect for large rooms, offices, schools, or open kitchens and living spaces. It is capable to clean 1300 Sq. Ft every 30 minutes by eliminating airborne contaminants on the loose.

It is a rather quiet air purifier with a noise level of 25 dBA at low speed & 49 dBA at high speed with power consumption from 1.8 watts to 45 watts, varying from low to high. It is also tuned to generate a soothing pink noise frequency which helps you sleep better.

It has 5 fan speed settings from 95 cubic feet per minute (CFM) to 350 CFM (turbo mode); where the lowest produces a whisper-like frequency. The Alen BreatheSmart 75i works on the classic Alen’s 3-stage air cleaning system:

Starting off, there is a meshy, pre-filter that captures larger particles and hence extends the life of the True HEPA filter. This new plastic filter is surrounded by a removable pre-filter for easy cleaning.

Then comes a normal ionizer which works by improving the efficacy of the air filtration system. The ionizer can be turned on/ off. When this feature is turned on, the allergens can be trapped more easily be by the 75i’s True HEPA filter.

Even the smallest kinds of bacteria can be totally removed through this process like E. coli and Staph.

However, this one has a real True HEPA air purifier, with variants of 4 available selections including Pure Filter – The standard True HEPA filter, Fresh Filter –with the addition of Activated Carbon filter, to deal with the household odors and chemicals.

Then, Pet Filter – Without the Activated Carbon filter, but with the patented Molecular Conversion Powder to destroy stinky pet odors at a molecular level. And finally, the Heavy Odor Filter – to remove all the household odors from smelly kids to kitchen garbage, and other daily activities.

Alen’s True HEPA- B7 Fresh filter contains an activated carbon layer and can easily remove airborne allergens, pollen, animal dander, smoke from cigarettes, or cooking, wildfire, and household chemical & aerosol sprays fumes and thus helping in the prevention of many respiratory issues.

By adding an antimicrobial compound to the True HEPA (H13) filter, Alen has protected the filter from any bacterial and microbial growth.

Additionally, made to run nonstop, the Smart Sensors in the AUTO mode detect the impurities in the air with a self-adjustment capacity to tackle the constantly changing environment by automatically speeding up or down the fan and changing the air quality; the air quality is represented as Blue = Excellent, Green = Good, Orange = Fair, Red = poor, Purple = Bad.

3. Medify MA-40 Air Purifier

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Medify MA-40 is an ideal, big sized Air Purifier for homes, open kitchens, living rooms, offices, schools, or even universities, hospitals, and restaurants, as well as other businesses as it can clean large spaces up to 1,600 sq. ft. in up to one hour and 840 sq. ft. in about 30 minutes.

The body of this air purifier is high-quality plastic with a smooth finish with an intuitive touch screen control panel offering some easy-to-use features like a 0-8 hour timer, sleep mode, fan speed, filter changing indication, and a child lock system.

These features are a great addition for both kids and pets for avoiding any unwanted setting changes by accidental touch.

This Medify Air purifier is quality and control tested and is ETL and Energy Star certified, and CARB approved, supported by the USA recorded Lifetime Warranty covered by genuine Medify replacement filters.

Medify MA-40 comes with a 3-in-1 filter plus a voluntary ionizer, while the Dual filter has three efficient layers: it is fortified with two HEPA filters where the H13 HEPA filter removes 99.9% dust, smoke, pet dander, bacteria, and mold particle.

Each one of the filters offers three stages of filtration to capture and then remove harmful pollutants, allergens, viruses, fungi & much more.

The first stage of the resistance is a pre-filter mesh which traps larger pollutants such as lint, animal dander, mold microbes, and dust mites, hence preventing the central HEPA filter from getting blocked early.

The last stage of the compound filter is the honeycomb-shaped activated carbon pelletized, odor and gas filter, which absorbs odors and VOC fumes from the air.

You can choose from 3 fan speeds available on the air purifier with a noise level of 46 decibels on the lowest fan speed and 66 decibels on the highest fan speed, which is slightly higher as compared to the air distribution rate as well as other models.

With a CADR of 224 CFM and the back-to-front air delivery scheme, this unit is suitable for an average-sized room as well as an open living room.

4. LEVOIT LV-PUR131 Air Purifier

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Levoit’s LV-PUR131 is a powerful & state of the art air purifier designed to clean the air of your large rooms. At its highest fan speed, LV-PUR131 can purify the air in a 900 square feet lounge in just about an hour. However, it is best suited for a large room measuring 360 square feet.

It is equipped with a state-of-the-art smart sensor to detect the air quality and an integrated color-coded LED display keeps you informed about your current air quality in distinct colors.

The sensor can automatically adjust the fan speed to any of the three-speed settings according to real-time air quality in your room or you can manually set any fan speed you like.

Its ingenious, low noise design ensures you a quiet & calm good night sleep which produces just 27 dBA of sound. This operational noise level makes it one of the most silent models available in the market.

Additionally, you can also turn off the LED display in sleep mode with the touch of a button to help you a comfortable & deep sleep time.

Like other Levoit air purifiers, LV-PUR131 also contains a three-layered filtration system comprising pre-filters, a true HEPA filter, and a huge honeycomb of activated charcoal.

This advanced combination enhances the efficiency of your air purifier by up to 30% as compared to other off-the-shelf models. It also has a positive effect on purification speed which is improved up to 30%.

The ingenious honeycomb charcoal filter makes this air purifier ideal for smokers & cooking enthusiasts. Combined with the H13 true HEPA filter, it a great defense against allergy and stuffy nose by removing 99.97% pollen, dust, and any allergen smaller than 0.3 microns.

Thus, LV-PUR131 is the best choice for smokers, pet owners & the elderly. The Levoit air purifiers do not have UV light or ionizers so that they are 100% ozone-free. With a timer function that can go as far as 12 hours, this is easy to set up and use.

Being one of the best energy-saving air purifiers, it is also rated by Energy Star as it costs about $12 to $15 per annum.

5. VEVA 8000 Elite Pro Series Air Purifier

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VEVA 8000 Elite Pro Series is a premium quality air purifier designed for high-quality performance and superior air cleaning. It can easily clean a room measuring 325 square feet at half the price of other air purifiers.

With its extraordinary efficiency and functionality, it is an ideal air purifier for allergy & asthma patients. The body of this compact air purifier is made out of plastic with a premium finish black-colored exterior.

Its unique purifying system is designed in an inverted fashion from front to back which means it sucks the dirty air from the front, purifies it, and pushes fresh allergen-free air out from its back. VEVA 8000 Elite Pro is supplied with 4 additional activated charcoal filters.

It unifies complete air filtration and purification systems in one machine despite only using a 2 stage air cleaning mechanism. Its true HEPA filter enables it to capture 99.97% airborne particles of dust, molds, or other allergens as small as 0.3 microns.

While the Premium activated charcoal filters utilize the marvels of nano-technology to entrap unwanted odors like smoking, cooking & pets. It has three-stage airspeed settings allowing you to operate it in different environments.

It can either be operated as an energy-efficient and ultra-quiet machine or sped up to a powerful turbo air cleaner to renew your room’s air with a CADR value of 135 CFM. The innovative design of VEVA 8000 lets you extreme portability & comfortable use in your home or office.

The ingenious sleek design can be interconverted between a table-top and an erect tower position with the addition/removal of the base. It however has a downside with the noise level with an average operating sound of about 40 dBA at the lowest fan speed.

At turbo speed, this noise is further escalated to almost 60 dBA which is similar to a bar or public restaurant. Since VEVA 8000 also does not employ any UV lamp or ionizer, it is a very environment-friendly and ozone-free air purifier.

With a built-in feature of automatic shut down if & when the front panel is removed, this air purifier is very safe to be used in homes with toddlers or the elderly.

6. RabbitAir Germ Defense Air Purifier

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Unfortunately, I am one of the few million people who find themselves plagued with allergens in the air. Air purifiers can certainly help you in that matter (personal experience). They freshen the air so you can breathe a whole lot easier.

RabbitAir MinusA2 with its advanced 6 stage filtration system can surely help in this matter; the first stage is the pre-filter stage (washable and permanent) that helps traps large size dust particles, the medium filter traps airborne particles larger than 1 micron.

BioGS HEPA Filter is 99.97% efficient in trapping pollen or particles that are 0.3 microns in size and reduces bacterial growth. It also helps minimizes common allergens to ensure optimum filter efficiency and filter life.

The 4th stage is the customized filter stage where you can choose from a variety of filters including Pet Allergy, Germ Defense, Toxin Absorber, or Odor Remover. The 5th is the Charcoal-based high-grade activated granular carbon filter to reduce household, kitchen stinks, or chemical odors.

And the last stage is the Negative Ion Generator that produces healthy ions to improve the quality of your indoor air and freshen your surroundings. The Rabbit Air App easily connects to your wireless network and allows you to monitor your home air quality and control the purification system from anywhere.

You can also access your account or order filter or manage multiple purifiers using the app. The MinusA2 can be used as a stand-alone device or can be mounted on the wall to save space. You can even set a daily schedule to run your purifier, adjust the mood light, LED light display, and air quality indicator as per your preferences.

You can even have your customized panel by choosing their Artists Series. With the cutting-edge version of your favorite gadget, enjoy the experience of breathing fresh air. It offers a room coverage of Up to 815 sq. ft. twice an hour on the highest speed setting.

When the device is in a dark room, the smart sensor will switch it to sleep mode, and when the light level rises, it switches back to its active mode. With daily 12 hours usage, the filter will last up to 2 years, and the Energy certified BLDC motor operates at 5 speed with various noise levels ranging from 25.6 to 51.3 dBA.

7. Okaysou AirMax Air Purifier

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Okaysou AirMax is a multi-use 8L purifier with a Medical Grade ULTRA-DUO Filtration System that effectively captures about 99.97% of harmful air pollutants as small as 0.25 micron. It is a big relief for asthmatic or other patients with breathing issues, helps them breathe easily.

It also safely breaks down various harmful gases including ammonia, VOCs, benzene, and formaldehyde that other 3 stage filters failed to accomplish.

You can satisfy your unique purification requirements by customizing and scheduling the hours of operation to 1/2/4/8. The 3 fan speed settings allow you to modify the air intake and output based on the quality of the air in your environment to achieve the best purifying outcomes.

Equipped with advanced Silenceboost technology and an innovative turbine motor with 45 vanes, special internal design, and a larger air inlet area measuring 14.17 x 9.52 inches projecting cleaner air and reducing the noise level up to 22dB so you can have a peaceful sleep.

You can also select the lowest speed for ultra-quiet operation, and it uses only 50W on the highest speed making it a highly efficient model. The washable 3-Stage Ultra-Filtration combined with the 2-Stage Duo Filtration is perfect for a home with dogs and cats or someone with severe breathing problems.

Its advanced 5 stage purification system traps large dust particles and successfully eliminates smoke or other unpleasant smells, also absorbs pet dander and hair so you could play happily with your pets.

Also comes with a sleep mode, a child mode, an auto shut-off indicator, and a filter replacement indicator signaling when the filter needs to be changed. As per the CADR review, it was rated 210 as it helps purify and circulates the air 120 times per day in a space measuring 320sq.ft.

Comes with a 5 years lifetime warranty, excellent customer support service, CARB certified, 100% ozone-free so you can enjoy its optimum purification performance.

8. Airthereal APH260 Air Purifier

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Established in 2017, Airthereal is working on the mission of providing nothing but fresh indoor air all around the world. Airthereal strives to stay on the top by introducing its cutting-edge air filtration technology to improve its products and the experience of everyone around.

Airthereal has a high quality, high performing 5-stage filtration system, comprising of 3 mechanical filtration stages including a pre-filter, true HEPA, and activated carbon combined in a single cartridge and 2 stages of electronic filtration including anion generator and UV-C light which is CARB certified declaring it ozone-safe.

The mechanical filter help filter out 99.97% of airborne particles. The UV function is activated to attract or break down the particles that aren’t captured by HEPA and CARBON and is installed inside a box to prevent people from being directly exposed to UV lights.

The anion function, on the other hand, is activated by electrically charging the air to attract dust, smells, and pollen to speed up the purifying process, and doesn’t require any replacement.

The smart APH260 air purifier monitor automatically detects air quality and intakes the air from the front and reacts quickly by discharging the air from the top vent, selecting the correct purifying mode as per the situation.

Comes with a 0-12 hour on/off timer to help save you time and money, along with extending the lifespan of the device, plus the timer allows making a proper schedule. You can also run the sleep mode at night to allow the device to run quietly.

It does come with a PM2.5 smart sensor and display that automatically determines the room air quality and turn red and starts flashing signaling you to check and replace the HEPA filter. Unfortunately, it’s not always accurate but it is something that can be easily fixed.

When the light starts blinking, press and hold the Timer and Fan buttons simultaneously for about 3 seconds to reset it. It is recommended to replace the filter after every 6 months for optimal working performance.

This purifier is CARB approved for ozone layer safety and comes with a good 2 years warranty and a great consumer support system.

A few complaints about child lock and a separate remote control were made, though they’d be a good addition, but not something you cannot live without, and again you wouldn’t find them in a lot of models.

9. Ivation Air Purifier

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Enjoy the sheer sensation of being alive while surrounded by that indescribable “clean-smelling” atmosphere that can only be found in nature.

This purifier is a bit different than others as it releases powerful negative Ions to purify and freshen up the area controlling maximum dust particles, allergens, and cleaning the air to help breathe you better.

Simply turn on the ionizer to experience substantially clean air quality as negative ions latch onto and remove the hazardous airborne particles from the air. It also generates beneficial ozone, pumping healthy activated oxygen into the space removing foul smells from tobacco, chemicals, pets, molds, and more.

Comes in an attractive cherry color wood exterior and stainless steel cabinet style that will last for years. A small but mighty device that will perfectly complement your home, office, or apartment decor.

Unlike a conventional filter, Ivations’s 2-in-1 ionizer and odor remover create numerous air effects making an exceptionally breathable room. The new 300B model by Ivation uses less power, has a quieter fan, better ion quality, and higher output than their competition.

There are two distinct, adjustable knobs on the left and right sides of the purifier. The knob on the left side of the control panel helps adjust the fan speed for ozone production, while the one on the right helps control the negative ion generator. Both these functions are independent of each other and are controlled separately.

The air ionizer feature emits negative ions that purify the air by removing even the tiniest hazardous particles. It covers up a large area of up to 3500 square feet, however, the most noticeable effect will be in the room where it is placed.

So this is an ozone generator, so I’d suggest using it in areas that aren’t frequently used, ensuring all the living organisms are out of the vicinity of the room when it’s switched on. Always remember when it comes to ozone, the Environmental Protection Agency has established the phrase “good up high, but bad nearby.”

10. Afloia Gala Air Purifier

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Afloia is a compact, H13 Ture HEPA purifier that traps up to 99.97% allergens, powerful enough to effectively clean the air for spaces up to 323 square feet, whether you live in a dorm, office, cabins, apartments, or campers.

Straight out of the box, it was super easy to use. With its smart air quality sensor, it continuously monitors the indoor air quality on its AUTO mode. It features several modes relaying the status of the air.

Red color warns you that the air is very unhealthy especially for children or adults with respiratory illness, yellow indicates moderate health level, and blue means good. It also comes with a dual-speed night light so, at the time of bed, you can separately shut off the light.

Simply turn the light off and use the purifier at auto mode to experience noise levels as low as 30 decibels (dB) on the low fan speed, you can easily operate it using the multifunctional tactile panel/ touch panel.

Features a three-layered (a Nylon pre-filter to absorb large particles, an H13 True HEPA filter to absorb 99.97% of airborne particles & lastly the Active Carbon filter to eliminate cooking, smoking, and pet odor) filtration system ensuring fresh air in your room for a long time.

Choose from 2H-4H-8H hours and one of the three (Low, High, Auto) function modes to have the unit automatically turn off when that set amount of time has passed.

The 2-4-8H timer giving you complete control over how you wish to operate your purifier, ideal for falling asleep without leaving this HEPA filter air purifier powered on an entire night.

Also, you wouldn’t have to worry about when the filter needs to be replaced, because after running around 2200 hours, the purifier will automatically shift to red light giving you the hint/ reminder that it’s time to change it.

Things Considers When Buying a Kitchen Air Purifier 

Although air purifiers are relatively simple machines, there might be some key parameters and functionalities left out if you don’t do your homework properly.

In the following section, we give you a walk-through guide to some key features which will enable you to make an informed choice when purchasing an air purifier.

Machine Capacity

The first & foremost thing is the capacity to clean air in specified room size. This factor is directly related to the size of your room.

You have to choose the capacity of the air purifier depending on the room size in which it would be used & it is always better to be on the larger side just to cover for the non-ideal environment like damped walls etc.

CADR rating

CADR is short for Clean Air Delivery Rates which is a measure developed by the Association of Home Appliance Manufacturers (AHAM) to help standardize the filtration of a specific type of pollutant particles in set room size.

As a rule of thumb, a higher CADR number means that the air purifier can remove more particles and vice versa. Some air purifiers have a single CADR number showing they are designed for only a specific type of pollutant; while other models may have filters for many different pollutants.

It is worth mentioning that some manufacturers follow the IQAirHealthPro standards instead of CADR rating; however such models remain lower in numbers.

Room Size

CADR rating associated with recommended area/room size is also an important feature that directly relates to your requirements.

For an average room size of 300 square feet, the minimum CADR number should be around 200 (cubic feet per minute), and similarly, for a larger 500 square feet room, you should get an air purifier with at least 350 cubic feet per minutes.

Types of Pollutants

Although there are all-in-one type air purifiers available in the market for your general air quality improvement; most machines are designed for anyone or two specific types of pollutants. Therefore depending on the environment, you can choose either for smokes or pets or kitchen smells.

Filter System & Types

Most air purifiers use two-layered mechanical filtration systems to physically trap the particles within them. The first layer is called pre-filter which stops the larger particles & pet hair etc. while the second layer is the main working horse which removes the different types of smells and odor from the air.

Pre-filters are just like those filters inside vacuum cleaners which may either be washable or disposable. The main filters are usually high-efficiency particulate air (HEPA) filters which can trap particles up to 0.3 microns small.

It is advisable to beware of the so-called “HEPA-type” filters which are claimed to be as efficient as HEPA filters but their working cannot be confirmed on the individual level.

These HEPA filters are often complimented with additional (activated) charcoal filters which specialize in removing Volatile Organic Compounds (VOC’s) often generated from cooking in the kitchen. Some air purifiers even have an extra layer of UV light to effectively disinfect the air from germs.

Filtration Maintenance Cost

In addition to the up-front capital required for air purifiers, you also need to periodically invest in the replacement of your exhausted filters for which some models have an indicator light.

You need to replace both layers (pre-filters as well as HEPA filters) once they have been used to their life which varies from filter to filter. Generally, expensive filters have longer operation life than the cheaper ones. Similarly, activated charcoal is also needed to be re-generated after certain usage cycles.

Noise Level

Generally, air purifiers are low-noise appliances with only a fan making a slight humming sound. Therefore these are very suited to be used in bedrooms especially for kids. Larger air purifiers however have somewhat higher noise levels sometimes going as high as 60 dBA.

Portability

Portability is another desirable feature that adds the icing to the cake. Most of the common sized air purifiers are equipped with a wheeled base with the exception of very large ones & depending on your use; you can opt for this feature without compromising the main things described above.

Energy Consumption

Typically, air purifiers consume very little electrical power depending on their fan size. On average, you can find an air purifier with a 50-watt power rating & it can go as high as 200 watts.

Some manufacturers have added an “eco” mode wherein they have particle sensors inside the air purifiers which put it on standby after reaching a certain purity level. Such models generally also have their Energy Star rating on them.

Additional features

There are also some additional features available on different models. Although these are not a deal-breaker, their presence on your appliance makes your life a lot easier. These include remote controller, Microprocessor-based control, integrated with smartphone apps, etc.

What are the Benefits of removing  cooking odor/smell ?

Getting a purifier for your kitchen is an intelligent decision, mostly because of the health benefits it offers, besides keeping your kitchen free of any cooking odors that tend to hang on, leaving your kitchen feeling fresh.

Different varieties and types of air purifiers are available on the market, each of which uses precise functions and machinery to undertake its filtration course.

Below are a few of the benefits kitchen air purifiers offer:

• They purify the air from any musty smells caused by mold and mildew.
• The chef does not get nauseous or turned off by the cooking smell, which averts them from eating what they cook.
• An odor-free kitchen air will have a positive impact on the guests.
• They prevent you and your family members from inhaling smoke and smells of waste products or rotten food.
• They tend to remove allergens caused by spices and food ingredients in the kitchen atmosphere.
• They are great for some people who own businesses that require continuous cooking.
• They are a great requisite for some People living in houses with bad ventilation experience this problem too.

Wrapping Up!

When shopping for an air purifier to get rid of your stinky kitchen smell, always keep an eye on a lot of components to get the best one. Not all air purifiers are designed to clean the kitchen odor.

In the above rundown of the best purifier to freshen the kitchen smell review, we have tried to offer you an overview of the best items as well as why they stand out as the top choice.

You can rest assured that you’ll be satisfied with your purchase. So, go ahead pick any purifier you want, knowing that you’ll come back to thank us. Happy Clean Breathing!!!

People Also Asked For Best Air Purifier For Cooking Smell

Do air purifiers help with cooking odors?

In a word, YES! Air purifier filters are packed with activated charcoal which has the ability to trap those complex, smelling (good or bad) molecules flying all over your kitchen inside it to keep the air around you clean and odorless.

Does an air purifier use a lot of electricity?

A typical air purifier usually has a power rating of around 50 watts which when considered against a typical light bulb of 60 watts rating is not much. It can even be considered a fair energy-efficient appliance to consume 18 kWh for daily usage of 12 hours.

Can I use an air purifier in the kitchen?

One of the ways to remove various odors from & clean your kitchen air in addition to using the “vent” or opening the window, is to use the air purifier which traps the odor molecules into its activated charcoal filters. So yes; you can use the air purifier in your kitchen the way you like.

How long should an air purifier run to remove kitchen odor?

As a rule of thumb, it depends on both the size of your kitchen as well as the capacity of your air purifier. Smaller air purifiers will take a longer time to remove kitchen odor and vice versa. Also, if your kitchen is sufficiently ventilated either by a kitchen vent or a large window (or both), the time to remove odor can be sufficiently reduced.