
If a wall or an entire house smells like nail polish remover, it could be due to several reasons. A common cause is a refrigerant leak in the air conditioner or refrigerator, which can be dangerous and cause health and fire hazards. Other potential causes include chemical off-gassing from new furniture, paint, cleaning products, or household products; poor ventilation; ductwork issues such as dust, mold, or animals; and in rare cases, drug manufacturing by neighbours. In some instances, the smell may be caused by something as innocuous as a rotten orange.
| Characteristics | Values |
|---|---|
| Cause of the smell | Refrigerant leak, chemical off-gassing, dead animals, mold, dust, pest control chemicals, rotten fruit, drug production, or leaks in the walls |
| Potential hazards | Fire, health issues, and acetone poisoning |
| Solutions | Open windows and doors, use fans, call a professional, get an air purifier with an activated carbon filter, perform basic duct cleaning, and/or schedule professional duct cleaning |
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What You'll Learn

Refrigerant leak from an air conditioner or refrigerator
If your wall smells like nail polish remover, it could be due to a refrigerant leak from an air conditioner or refrigerator. Refrigerant leaks can cause several problems, including a strong, unpleasant odour. Refrigerant leaks are more common in older or poorly maintained systems.
To identify a refrigerant leak, you should look for signs such as water or ice buildup around the appliance. If you hear a strange hissing sound, this is another indication of a leak. If you suspect a refrigerant leak, it is important to call a professional for assistance. Refrigerants can be unsafe, and it is not recommended to attempt repairs without the proper expertise.
In addition to refrigerant leaks, there are other potential sources of nail polish remover-like smells. These include:
- Chemical off-gassing from new furniture, paint, cleaning products, or other household items.
- Poor ventilation, especially in ducted heating and cooling systems, where dust, mould, or small animals can be sources of odours.
- Dead animals in the ducts or walls, which can create a strong and persistent odour.
- Fried wires and electronics, such as a malfunctioning dishwasher.
- Mouldy fruit, which can sometimes emit a surprisingly strong odour.
To address the smell, you should first identify its source. If it is due to a refrigerant leak, a professional can locate and repair the leak, replenish the refrigerant, and eliminate the odour. If the smell is caused by other factors, taking appropriate actions such as improving ventilation, removing the source of the odour, or seeking professional duct cleaning can help resolve the issue.
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Chemical off-gassing from new furniture, paint, or cleaning products
If your wall smells like nail polish remover, it could be due to chemical off-gassing from new furniture, paint, or cleaning products. Off-gassing is the airborne release of chemicals in vapour form, often associated with that "new smell". While some products may no longer smell new, they can continue to off-gas subtly.
Volatile organic compounds (VOCs) are released during off-gassing and can be found in everyday household items such as fresh paint, new furniture, carpets, and cleaning products. Building materials, such as formaldehyde in wood products, can also be a significant source of off-gassing, releasing chemicals into the air over time. Even a single piece of new furniture can increase VOC levels in a home. Other items that release VOCs include electronic devices, mattresses, and scented laundry detergents.
The effects of VOC exposure can range from immediate symptoms such as headaches, eye irritation, and nausea, to long-term health risks like respiratory issues and cancer. It is important to recognize the sources of VOCs in your home and take steps to reduce emissions. One way to do this is by choosing low-VOC or VOC-free products, such as solid wood furniture instead of composite furniture, and specifying low-VOC paint for renovations.
To speed up the off-gassing process and reduce VOC concentrations, increase ventilation by opening windows or using fans. You can also heat the room to increase the off-gassing rate, but be cautious of sun discoloration. Additionally, you can use air purifier systems or plants to filter VOCs out of the air.
By understanding the potential dangers of off-gassing and taking proactive measures, you can help improve your indoor air quality and maintain a healthier living environment.
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Dead animals in ductwork or HVAC system
A nail polish remover-like smell in your house could be a sign of multiple harmful issues. The smell you are perceiving is likely acetone, which is highly flammable and can cause acetone poisoning. This chemical can be found in furniture polish, rubbing alcohol, and nail polish. In this case, the source of the smell could be a refrigerant leak in a fridge or wine fridge cooling system, or a broken dishwasher.
Now, if you are smelling a dead animal in your ductwork or HVAC system, you should take immediate action. Firstly, identify the source of the foul odor. The smell of decay will worsen over time and can affect the health and well-being of your family. The larger the animal, the more gases will be produced during decomposition, and the longer the smell will last. Once you have identified the source, put on a good pair of gloves and extract the carcass. Place it in a thick-walled plastic bag, seal it, and dispose of it. Remember to disinfect all areas the animal came into contact with to prevent the spread of diseases, germs, ticks, fleas, and fur.
After removing the carcass, you should identify and seal any entry points to prevent future incidents. Check the entire network of HVAC ducts and seal any holes or openings. These holes not only allow rodents and pests into your ductwork but also cause air leakage, making your heating and cooling systems less efficient. Consider calling an HVAC professional to inspect and resolve any ductwork damage. They are trained to spot and fix problems with ductwork and can help ensure this issue does not recur.
If you are unsure about handling the carcass or ductwork yourself, it is recommended to contact a trusted HVAC company or pest control service for assistance. They can help with the removal, cleaning, and prevention of future incidents, ensuring your ductwork is safe and clean.
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Rotten fruit
Acetone is a clear liquid that evaporates quickly when exposed to air. It is highly flammable and can cause acetone poisoning with serious side effects. Acetone is commonly found in furniture polish, rubbing alcohol, and nail polish.
If you suspect that rotten fruit is causing the nail polish remover smell, it is important to locate and dispose of the culprit immediately. The smell from rotten fruit can linger for a prolonged period, but proper ventilation can help dissipate it. Opening windows and doors, using fans, and circulating fresh air can speed up the process of eliminating the odor.
In addition to rotten fruit, other possible sources of an acetone smell include refrigerant leaks in air conditioners or refrigerators, chemical off-gassing from new furniture, paint, cleaning products, or household products, and ductwork issues in heating, ventilation, and air conditioning (HVAC) systems. It is recommended to address the source of the smell and take appropriate measures to ensure proper ventilation and eliminate any potential hazards.
To summarize, a wall smelling like nail polish remover could be due to rotten fruit, particularly rotting oranges emitting an acetone odor. Proper ventilation is key to dissipating the smell, and addressing any potential sources, such as refrigerant leaks or HVAC issues, is crucial to ensuring a pleasant and safe indoor environment.
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Neighbour cooking drugs
A nail polish remover-like smell in a house can indicate a refrigerant leak in a fridge or wine fridge cooling system. It could also be caused by fried wires and electronics from a dishwasher. However, if the smell is acetone, it can be dangerous as it is highly flammable and can cause acetone poisoning.
If you suspect your neighbour is cooking drugs, it is important to be vigilant about any unusual activity or signs. Methamphetamine, also known as meth or crystal meth, is often made in small, clandestine laboratories using household products that can be purchased at local grocery stores. These ingredients include battery acid, household cleaners, paint thinner, freon, pseudoephedrine (found in Sudafed), and acetone. Meth labs can be located anywhere, from secluded rural areas to residential, commercial, and industrial districts.
- Unusual amounts of cold pills containing ephedrine or pseudoephedrine, or empty packages of these pills.
- An unusual amount of containers for chemicals like freon, acetone, anhydrous ammonia, red phosphorous, or lithium metal.
- Excessive amounts of trash outside, such as large amounts of chemical containers, coffee filters, red-stained cloth, duct tape rolls, or two-liter soda bottles (from the "shake and bake" method of making meth).
- Occupants of the suspected lab may exhibit unusual behaviour.
- Unusual or excessive amounts of household products that can be used to make meth, such as battery acid, household cleaners, paint thinner, and freon.
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Frequently asked questions
The smell is likely acetone, which is found in nail polish remover and evaporates quickly when exposed to air. It could be coming from a refrigerant leak in your air conditioner or refrigerator, or from chemical off-gassing from new furniture, paint, cleaning products, or other household products.
Open the windows and doors to improve ventilation and help circulate air. If the smell is coming from your AC or fridge, check for signs of a leak, such as water or ice buildup or a hissing sound.
Call a professional to inspect your HVAC system and appliances. They will be able to locate and fix any leaks or other issues causing the smell.
Yes, acetone is highly flammable and can cause acetone poisoning with high exposure. It can also indicate HVAC issues, such as poor ventilation, duct contamination, or refrigerant leaks, which can pose health and fire hazards.
Yes, in rare cases, it could be due to a neighbour "cooking" drugs, or something as innocuous as a mouldy orange.











































