Pet safety is the benefit.
ASPCA Animal Poison Control says concentrated essential oils can be dangerous to pets, including through direct coat or skin exposure and ingestion. A dog’s sense of smell is also far more sensitive than ours, so an aroma that feels light to a person may be overwhelming to the animal.
Never apply directly
Avoid fur, paws, collars, skin, food and water. “Natural” does not make concentrated oil safe for pets.
Provide an exit
If your veterinarian agrees to diffusion, keep it brief, ventilate and make sure the dog can leave the room.
Watch behavior
Stop immediately for coughing, drooling, vomiting, unsteadiness, unusual tiredness or breathing changes and contact a veterinarian.
Cats, birds and other pets
Cats may be especially sensitive to essential oils. ASPCA advises avoiding diffuser use around birds because of their sensitive respiratory tracts. Keep bottles and diffuser water out of reach of every pet.
If exposure or ingestion is suspected, contact your veterinarian or ASPCA Animal Poison Control at (888) 426-4435.
Related guides
Sources: ASPCA: The Essentials of Essential Oils Around Pets · ASPCA lavender toxicity listing. Updated July 29, 2026.