Cat Sauna to clear nasal congestion due to bacterial infection
Does a water vapor session in your bathroom while you shower, or under a towel with a bowl of steaming water, really help to relieve the nasal congestion of a cat suffering from a bacterial and viral infection, which has blocked his nose with snot? The theory is to loosen the snot so that it flows out. It is also a technique recommended for people.

Cat in sauna to relieve nasal congestion brought about by infection
Sometimes people add a decongestant to the water to make the process more effective. Dee says “add a dollop of mentholatum to the water”. My vet said don’t add anything to the water but I totally trust Dee because she has years of hands-on experience.
I have two veterinary sources which say steaming is good so I am doing it to try to help relieve the discomfort for my cat who is very ill with suspected herpes virus or calicivirus or some other nasty cat virus combined with a horrible secondary infection. My vet recommends it and so do the books I have.
The downside is that cats don’t like it. People know what is happening. They understand that there will be steam or water vapour in the bathroom but cats don’t. For them it’s strange and unsettling. Also you have to put your cat in a carrier to control him. This downside offsets the potential benefits I feel.
Also a cat will learn to be wary of you if you constantly make him do things which he finds unpleasant because he does not realise it is for his benefit.
I will continue to do it at least once per day as I have to try everything I can to promote a return to health. I am giving him L-lysine when I can.