The question as to if he will have problems, only he can answer. BUT I do know that whether or not you are cleared for diving by a Doctor depends on how tightly they interpret the meaning of "normal spirometry" on the medical form. In other words... I have not been able to start my Dive Master because I do not have perfect breathing characteristics, according to how my Doc interpreted my post-exercise results against the PADI medical form. However, I don't smoke, have normal blood pressure, don't eat red meat, and have good cholesterol - while many of my fellow divers do regularly have most of these issues and somehow manage to get a doctor to sign off on them.
BTW - I don't feel that comparing the sport of scuba with skiing is useful in this context. If you start to panic on the side of a hill or have an episode, he can always just stop and whip out an inhaler. Which brings up an important point - I also don't feel that someone that requires the use of albuterol or another quick-acting inhaler should be diving. Personally I use Advair twice a day and have never had problems, but I suspect that this is only because I am able to control my asthma.
BTW - I don't feel that comparing the sport of scuba with skiing is useful in this context. If you start to panic on the side of a hill or have an episode, he can always just stop and whip out an inhaler. Which brings up an important point - I also don't feel that someone that requires the use of albuterol or another quick-acting inhaler should be diving. Personally I use Advair twice a day and have never had problems, but I suspect that this is only because I am able to control my asthma.
