Some of my furkids will, at sundry times, go through sneezing bouts. But I believe it is due to pollen and other irritants that are in the air. This is because, their sneezing changes with each weather front that comes through. Actually, they seem to have the best health when it is foggy outside or when it is raining. Fawn used to get sick with runny eyes and sneezing when I first moved to Kansas, but not he doesn't do that anymore.