Thanks so much for the links. Mollie Rose has had this type of wheezing and congestion once before and was hospitalized. I asked the vet if there were any kinds of kitty inhalers I could use on her and she said no. She gave her an injection of ammoxicillin with a steroid in it and liquid to take home. She's doing much better today.
Up until yesterday I didn't know cats had allergies or could get asthma and be allergic to stuff like cleaners, dust, cigarette smoke, etc. Ya learn something new every day I guess.