I have had a similar experience to Dahon.Steve and have quit my meds. I have a long history of asthma and spent a good deal of time in an oxygen tent when I was a young lad. It pretty much went away when I reached puberty, but came back when I was an adult. When I was in my last year of university and under a lot of stress, my asthma was getting worse by the month and I was on a salbutamol inhaler and on steroids. After I finished university I moved to Toronto and the day I arrived my asthma stopped. Haven’t had any major problems with it for about 12 years or so and my inhailer will expire before I use it up. If I do have an asthma attack, it is when I am exercising in the cold and I will take one puff from my inhaler and it prevents that attack.