If you expose one's lungs to smoke, whether burning metal, wood, petroleum, coal, tobacco(from either end of a cigarette),etc. for an extended amount of time CAN harm your lungs.Not all smokers get lung disease and not all with lung disease were smokers. You can find a study with stats to back up either side of any issue. Personally I applaud any law that limits my exposure to second hand smoke simply because it gives me a headache, bothers my eyes, ruins my appetite, and makes my clothes smell bad. It can be argued that second hand smoke doesn't kill people but I think a large percentage of our society would agree that it does adversley affect us. what happened to Re:helmet laws
