question: Hi, My fiance is 23 and has never smoked but has been going out to bars and clubs every week -sometimes twice a week- for the past 7 years - most of them outside that allow smoking but some of them inside that still allow it. I wouldn't say they are overly smokey, just a few people every so often I guess. She said she stayed away from people that smoked there but I know it's still really bad and i'm worried that she has done long term damage to herself and her lungs - During the week she doesnt have any exposure, just on the weekends for a few hours a night. Can she heal back to normal after this or do we always have to worry for the future of respiratory problems?