Lupus affects the lungs in nearly half of all who have it.
I'm sure there are many who are in a similar situation.

yep, a few years after I was diagnosed I got what the doctors call "athlete induced asthma" from which they say is a complication from my Lupus. It affected me the first few years and I was takin an inhaler, but now I feel fine and I can compete in any physical activity without having to take my inhaler before hand, which is what I used to have to do before every workout session.

I definetely do. Never had any breathing problems..It changed as one of your replys above...first exercised induced now just regular asmtha...induced by exercise, smells stress etc etc...