Having been a smoker for over twenty years, I know first hand what a disgusting habit it is and as a result I go out of my way most times to avoid smoking near other people. Not only do I put my cigarette behind my back but will hold my breath and not exhale until someone walking by passes.
The other day, a plus-plus size woman fifty feet away from me at the time started flailing her arms and made sure to walk in the street while yelling at me about the dangers of second-hand smoke. If you're going to make a scene in front of other people to prove to yourself how superior you are to me, than you might want to prepare yourself for a response.
I let her know about the dangers of second-hand obesity! That's when you keep your cupboards stocked with junk food and your freezer filled with Ben & Jerry so that your offspring can and most likely will grow out of their clothes on a monthly basis.