@Laotionne - I too have noticed a lot more kids walking around with inhalers in case they have an asthma attack. I don't know whether more kids have asthma now. Maybe we are just doing a better job of recognizing the condition, and more treatment options, like inhalers, are available now than there were in the past.
I coach a kids' basketball team at the Y, and each year I can count on having at least three players who have asthma. I'm always trying to find that point where I push them hard enough without causing them any serious health problems.