I am using a humidifier with a vapor menthol for congestion and was wondering if It is okay to have around my cat.
There is not any research I’m aware of that has investigated this. I’ve spoken with a toxicologist about this before and was advised against it as cats can be sensitive to essential oils. Anecdotally, I’ve spoken to another veterinarian that has said they have used it regularly in a house with multiple cats and had no issues when flu season came about. That being said, if your cat has feline asthma, I would definitely avoid it. Overall, it’s probably safest to just not have your cat around it just in case.