Are air fresheners safe for pets? Not all of them, and cats are the most at risk. Air fresheners come as sprays, plug-ins, gels, reed diffusers, candles and simmering potpourri, and many contain fragrance chemicals or essential oils that can irritate a pet’s airways, and in cats can cause poisoning if they get onto the fur or into the mouth. Used sparingly, in a ventilated room the pet can leave, most cause no harm. Licked, chewed or spilled, they can. If your pet chewed an air freshener, licked liquid potpourri or a plug-in refill, or is drooling, coughing, wheezing, vomiting or wobbly, call your veterinarian, the nearest 24-hour emergency animal hospital, the ASPCA Animal Poison Control Center at (888) 426-4435 or the Pet Poison Helpline at (855) 764-7661 (both US, 24/7, a fee may apply).
This page is general information from a pet parent who reads veterinary sources, not a veterinarian. It is here so your call to a professional is faster and better informed, not to replace it.
What Is in an Air Freshener
The honest answer is that you often cannot tell. A fact sheet from the University of Rochester’s environmental health center notes that “many of the chemicals used in air fresheners have not been fully tested for health impacts,” and that manufacturers are not required to list every ingredient on the label. It names the main types: “sprays, plug-ins, candles, diffusers, incense, and scented gels.” The same fact sheet notes that essential oils “can be harmful to pets.”
That matters because the risk to a pet depends on what is in the product and how the pet meets it: breathing the scented air, licking a surface or its own fur, or chewing the product itself.
Are Air Fresheners Safe for Cats?
Cats need the most caution. The Merck Veterinary Manual explains that “cats are more sensitive because they are deficient in the enzyme glucuronyl transferase,” which the liver uses to process many aromatic compounds, including those in essential oils. VCA Animal Hospitals adds that cats “are fastidious self-groomers,” so anything that settles on their coat gets swallowed.
VCA’s article on essential oil and liquid potpourri poisoning in cats describes a specific danger: simmering liquid potpourri. Cats may taste it from the pot or get it on their fur, and VCA lists signs including drooling, pawing at the mouth, vomiting, difficulty breathing, wobbliness, lethargy, muscle tremors, and redness or burns on the lips, gums, tongue or skin.
Cats with asthma deserve extra care, because scented air can trigger coughing and wheezing.
Are Air Fresheners Safe for Dogs?
Dogs are less sensitive to essential oils than cats, but they are much more likely to chew things. A plug-in pulled from the wall, a gel cup, a car vent clip or a reed diffuser bottle knocked over and licked are typical dog exposures. Chewed plastic adds a choking and blockage risk to the chemical one, and a chewed plug-in adds an electrical one.
Dogs with breathing problems, flat-faced breeds and older dogs are the ones most likely to show coughing or sneezing from heavy fragrance.
Type by Type: Where the Risks Are
| Type | Main risk | Lower-risk use |
|---|---|---|
| Aerosol and pump sprays | Airway irritation; droplets settling on fur and bedding | Never spray near or at a pet; spray in an empty room and air it out |
| Plug-ins and warmers | Liquid refills licked or chewed; warmed oil; electrical cord | Outlets pets cannot reach, away from beds and food bowls |
| Gels and bead cups | Chewed and swallowed by dogs | High shelves only |
| Reed diffusers | Tipped over, oil on fur or licked | Stable, high placement; not in cat rooms |
| Active (ultrasonic) diffusers | Merck: they “emit microdroplets” that land on fur and are groomed off | Brief use, not in cat areas, room the pet can leave |
| Simmering liquid potpourri | Tasted from the pot or spilled; VCA describes mouth and skin burns in cats | Avoid in homes with cats |
| Candles and incense | Smoke; burns; knocked over | Never unattended; out of tail range |
Signs an Air Freshener Is Affecting Your Pet
From breathing it in, Merck lists watery eyes, runny nose, nausea, drooling, vomiting, difficulty breathing, fast breathing, coughing or wheezing. From licking or swallowing, Merck lists vomiting, lethargy, drooling, wobbliness and loss of appetite as the most common signs, with tremors, low body temperature and seizures in serious cases. Fragrance on the coat or breath is a clue that a pet has been in contact with a product.
If you notice your pet sneezing, rubbing its face, leaving the room, or coughing whenever a product is in use, take that as a sign to stop using it.
My Dog Licked an Air Freshener: What to Do
- Remove the product and check for chewed pieces, spilled liquid or a damaged cord. Unplug before touching a chewed plug-in.
- Move your pet to fresh air.
- Wash any liquid off the fur and skin. VCA advises liquid dishwashing detergent and a thorough rinse.
- Keep the packaging or a photo of the label for the vet.
- Do not induce vomiting. Merck warns against it with essential oils because of aspiration risk. See should I make my dog throw up.
- Call your vet or a poison line, and go in for breathing trouble, tremors, repeated vomiting or burns in the mouth.
If a cat is involved, call even for small amounts. See what to do when a cat may be poisoned.
Pet-Safe Alternatives to Air Fresheners
The University of Rochester fact sheet’s first suggestion works well in pet homes: “Open windows and increase ventilation.” It also advises you to “clean up pet areas frequently.” Other ideas that avoid adding fragrance:
- Find and remove the source of the smell: litter boxes scooped daily, bedding washed, accidents cleaned with an enzyme cleaner.
- Run an exhaust fan or use an air purifier with a filter, placed where pets cannot chew the cord.
- Choose unscented cleaning products and laundry detergents.
- Keep fresh herbs in pots only if they are on the ASPCA non-toxic list and out of chewing range.
Products labeled “natural” or “made with essential oils” are not automatically safer for pets. For cats in particular, essential oils are the concern, not the solution. See our guide to essential oil diffusers and cats.
Why We Give No Safe Amount
This site does not publish toxic or safe amounts. With air fresheners, ingredients are often not listed and products vary widely, so the useful question is not “how much” but “what was it and what is my pet doing now.” A poison line can help with both.
Sources Checked
On October 28, 2026 we read the University of Rochester Institute for Human Health and the Environment fact sheet The Hidden Hazards of Air Fresheners (updated September 2025), for the product types, untested chemicals, labeling, the note on essential oils and pets, and the ventilation advice; the Merck Veterinary Manual page Toxicoses From Essential Oils in Animals (last updated March 2025), for cat enzyme sensitivity, diffuser types, inhalation and ingestion signs, and the warning against inducing vomiting; and VCA Animal Hospitals’ Essential Oil and Liquid Potpourri Poisoning in Cats by Renee Schmid, DVM, DABT, DABVT, Ahna Brutlag, DVM, MS, DABT, DABVT, and Charlotte Flint, DVM, for liquid potpourri, signs and washing advice. This article publishes no dose, threshold or safe amount.
Frequently Asked Questions
Are air fresheners safe for pets?
Some can be used carefully, but many contain fragrance chemicals or essential oils that can irritate airways or poison cats if licked. Ventilation and placement matter.
Are plug-in air fresheners safe for cats?
Use caution. Liquid refills and warmed oils can end up on a cat’s fur. Keep them away from cat areas, or skip them.
My dog chewed a gel air freshener. What should I do?
Remove the pieces, wipe the mouth, keep the packaging and call your vet or a poison line.
Is simmering potpourri safe around cats?
VCA describes liquid potpourri causing mouth and skin burns and poisoning in cats. Avoid it in cat homes.
What is a pet-safe way to freshen the air?
Ventilate, clean pet areas often, use unscented products and an air purifier.
This article is general information and does not replace veterinary care. If your pet licked, chewed or was sprayed with an air freshener, or is unwell, contact your veterinarian, the ASPCA Animal Poison Control Center at (888) 426-4435, or the Pet Poison Helpline at (855) 764-7661. Only a veterinarian who examines your pet can tell you what an exposure means for them.