Why Does My Air Purifier Smell Sour?

Most of us spend our quality time indoors, either at home or in a workshop. However, you never realize that interior air is more contaminated than outdoor air. It’s why air purifiers are made to solve this problem, but why do you think your air purifier smells sour?

Sour smells from air purifiers are entirely normal. It is usual and expected due to the initial absorption of chemicals while using an activated carbon filter. This is perfectly common and poses no risk.

Depending on the flow setting your units are running at, the stench should go away in one to three weeks. In addition, air purifiers come in handy in this situation, trapping bacteria, dust, grime, and other dangerous particles. You should continue reading to learn more about my findings.

Is It Normal That My Air Purifier Smells Like Vinegar?

Some problems with your machine could inspire some odors. For instance, an awful vinegar odor arising from the filter could result from a malfunctioning power motor. Other difficulties include excess condensation on malfunctioning filters, the coil, ductwork mold formation, and a blocked condensation pan.


Cleaning should be done thoroughly, and defective components ought to be replaced. However, if the issue persists, try contacting a professional technician for assistance.

How Do I Get Rid Of Sour Smell In My Air Purifier?

If a sour odor persists, you should place the activated carbon filter in a sunny, well-ventilated location for a lengthy time. Nonetheless, consider replacing the filter if it has been used for a long time.

Why Is My Air Purifier Smell Like Plastic?

The smell of plastic created by an air purifier is a common complaint among homeowners. It’s common for an air purifier to emit a plastic odor during the first few days of use. 

Furthermore, fresh molding vapors in the package box are the source of the plastic odor. Unboxing a package releases the plastic odor, which will shortly be expelled into the open air.

Do Air Purifiers Smell?

Air purifiers are susceptible to a variety of odors. However, there are ways to get rid of any odors that may arise.

How Do You Get Rid Of Plastic Odor?

There are a few straightforward methods for eliminating the stink. By operating your air purifier at high speed for at least 24 to 48 hours, you can get rid of the plastic stench. If the plastic stench lasts more than a few days, there could be other causes, such as burning plastic due to wiring short-circuit. 

You can proceed by switching off the air purifier and send it back to the manufacturer for service and repairs. Such mechanical flaws are covered under the manufacturer’s guarantee. 

The repairs and services are free, so you shouldn’t be concerned about additional charges. You may be having a different issue. Your air purifier may create a smoke odor in some cases.

Why Does My Air Purifier Smell Like Smoke?

After a long time of excellent use, an air purifier may produce a burning or smoke odor that is unpleasant to your nose. However, what may have caused the odor of smoke? Here are several possible causes for your air purifier to smell like smoke.

Clogged Filter

When last did you replace your air purifier’s air filter? The air filter is prone to dust clogging, and when it becomes clogged with too much dirt, it restricts airflow. 

This can place greater strain on the air purifier system’s fans, motors, and other components. As a result, air purifiers may create a smoke-like odor.


Take a moment to inspect if the air filter is clogged and replace it with a new one. Nonetheless, if this is not the case, try looking into the next issue.

Smoldering Dust

Air purifiers may go for long periods without running, but once they do, a burning dust-like odor may fill your house or office. The odor is harmless, but it could be produced by dust accumulated on your heater or furnace. However, it only rusts for a few minutes before disappearing.


By running it for a bit, you may get rid of the odor. However, consider moving on to the next issue if the issue remains.

Capacitors Failure

A capacitor is found in every air purifier and works with a powerful motor. If the capacitor fails, it might cause the power motor to overheat. This could result in a burning, smokey odor. Meanwhile, capacitors might fail for a variety of causes.

Some involve circuitry or electrical surges that occur multiple times per second, resulting in wear and tear.


First, turn off your air purifier and contact a professional for mechanical assistance. It’s also a good idea to think about changing the capacitor.

Malfunctioning Motor

Faulty motors, like faulty capacitors, can cause a cigarette-like odor. In addition, the bearing may wear out over time due to continuous use, leading the motor to overheat.


Turn off the air purifier and lubricate the motor bearing if you smell smoke. This will reduce friction and prevent you from having to replace the motor. However, if the problem remains unsolved, move on to the next one.

Overheated Belt-drive Motor

There are many different types of air purifiers. Some blowers are belt-driven rather than direct-driven. Rubber belts are susceptible to wear and tear due to regular use. Burning and a smokey odor can occur as a result of the wear.


Turn off the air purifier and inspect the belt drive for wear and tear; consider replacing it to eliminate the smoke odor if it is worn out.

Why Does My Air Purifier Smell Like Fish?

The thought of your amplifiers having a fishy odor can be scary. A fishy odor coming from an air purifier vent does not necessarily suggest the odor is coming from dead animals or mildew. The problem, however, is dangerous and should be discussed with the agency. 

Overheating polymers in electronic components is a common cause of the fishy odor. The plastic electric component is made up of chemicals that give off a fishy odor. The plastic might become hot or burn in extreme circumstances, and the odor can be similar to urine.


Turn off the air purifier if you can find the source of the odor. This will prevent the odor from being drawn through an intake vent. After that, contact a professional technician to resolve the problem.

Why Does My Air Purifier Have A Wet Dog Smell?

The first indicator of a foul odor in an air purifier caused by germs and natural oils from inside humans is a wet dog odor. When your air purifier smells like a musty wet dog, it’s a sign that bacteria, mildew, or mold is forming inside. The odor isn’t only unpleasant, but it is also detrimental to your health.


To keep filth and microbial infestations at bay, examine and clean air vents and filters. Make sure it’s completely dry and make any required repairs.

Why Does My Air Purifier Smell Like Chlorine?

Air purifiers have a chlorine-like odor and a strong cleaning odor. As a result, ozone gas is being produced. This is because it is hazardous due to its high reactivity with oxygen.

Its chemical composition is toxic to our bodies and can cause lung damage. Some conditions are intense, resulting in asthma exacerbation or a chronic respiratory condition. However, there’s no need to panic if the cleaning smell isn’t too strong.

Purifiers that use ionic air produce ozone gas as a by-product. The sole reason an air purifier emits a chlorine odor is to indicate that it is operating properly. However, some air purifiers produce a by-product gas with a slight odor.

It should only come to your attention when the chlorine odor becomes more intense.


Turn off the air purifier and make an appointment with a skilled technician.

How Do I Get My Air Purifier To Stop Smelling?

If your air purifier is emitting any of the above-mentioned foul odors, you can get it back to its optimal condition with a few steps. However, the internal components are responsible for most of the foul odors. As a result, you must conduct an internal investigation. 

The following are some of the things to keep an eye out for:

  • Faulty components
  • Dust
  • Mold
  • Clogged fitters
  • Dirt

The air filters will be the source of most air purifier difficulties. Monitoring and cleaning are recommended to eliminate the grime, molds, dirt, and bacteria that might accumulate over time. To avoid faulty cases, it’s also crucial to know how long the filters need to be replaced.

Keep the house clean and dry to avoid mildew and mold from forming in your air purifier. If your air purifier isn’t producing any unpleasant odors, turn it off and contact the manufacturer for service and repairs. 

All of the odors in this list can significantly impact your machine. As a result, its knowledge is crucial in assisting you in properly dealing with these problems.