No!! Lol unless there is colorful drainage from the nose or they are more lethargic. Mine do all the time! But tons of pollen, even my cats have been sneezing lol
I noticed that since input them in the garage with the warmer they are sneezing a lot more. But I think the pine shavings I am using is causing them to sneeze. I need to get different shavings. They are sneezing often but no resp symptoms and no discharge from the nose? So I'm they are fine