I've had asthma all my life.... seasonal, allergy and exercise induced it wasn't until my 20ies when they finally decided a needed an inhaler...
after stopping smoking....it took sometime....but my xrays show my lungs are better now than they have ever been in my life....I mean I still need an inhaler for changing of seasons and when the pollen count is high, but other than that I'm pretty good off
and (well aside from currently this dang influenza is kicking my .... for 2 1/2 weeks) now when I do get respiratory infections I can usually fight them off within 2 or 3 days, tops a week, instead of them dragging on for about a month