Frumnotyeshivish – with all due respect, you could not be more mistaken. If you smoke, you smell like an ashtray. You may not mind the smell, but people around you do, plus your smell permaeates whatever place you go into, i.e. your car, someone’s home (not even your own where you smoke), the clothing you wear and so forth. You have every right to enjoy that smell, but most people do not like it, especially when the odor is STALE.
Children exposed to even small amounts of second-hand smoke have a higher incidence of respiratory ailments than other children. People who work in environments where there are smokers, have been known to devekop emphysema and even lung cancer, when they have never smoked. Look at the late Dana Reeve, the widow of Christopher Reeve (played Superman) who died of lung cancer. She was not a smoker, but was exposed to it at work.
Your smoke pollutes the air that I have to breathe, along with all the other people who make a conscious decision NOT to deliebrately hurt our lungs with this poison. You should put a bubble over your head to encase yourself completely, with oxygen to breathe, and I will never say another word about your smoking, though I will daven for you that you do not get a machlah from your personal decision. Death from lung cancer is quite painful and protracted. Imagine feeling like you are drowning with no end in sight. Stop kidding yourself, and stop trying to rationalize your dangerous habit to the rest of us. Admit that you are a yetzer hara that is very powerful over you (and I KNOW it is), and instead of trying to justify it, accept that your Y”H is in control of you, and try to take steps to get control over it instead. You will save a LOT of money, and possibly your life and the lives of those around you. You are less insurable if you smoke, also. I am personally shocked that Gedolim have not assered this outright.
BTW – you are mistaken – I happen to LIKE the smell of FRESH smoke, and in particular, the delicious smell of cherry pipe tobacco. I still would not want to be exposed to it anymore, knowing what every intelligent person now knows about the danger. But even as much as that smell might be pleasant at first, once a little time has passed, it STINKS and remains in the air.