It definately got worse during spring and summer, and really got bad when we visited my parents in
Ontario - heat and
humidity there have made for terrible air quality, and
they were recommending people with asthma and bad allergies stay in. He has never struggled with breathing or changed color. He does, from time to time, make sort of a wheezy sound. This happens when he is excited or upset, so it's hard to tell if it's anything to do with allergies, or just a noise he likes to make.