I have had EIA most of my life but did not get treated until about five years ago. I thought it was normal to wheeze when exercising. Finally it got bad enough that people in races were asking if I was ok and riders on training rides were telling me to get Albuterol.
I'm now on Symbicort, which is legal for competition in the amounts I'm taking. It works pretty well. i was using it only for harder training rides and races until my doctor told me that not using it could hasten COPD. Aiee. I take it daily now. The asthma is worst for me when the air is cold and wet.