Just ask nicely, I smoke and don't like bothering anyone either. Just be nice and try to work something out. I hope when I quit the smell doesn't bother me that much.
Pamphlet Guy: I really despise condescending asses who think they are saving people. We all do what we want, don't think anyone takes you seriously. I also tell the Mormons/Jahova's Witnesses/Hari Krishnas, whatever they want to hear to get them to go away. Nazi anti-smokers are on the same level. It is just a reason for them to feel that they are better than you, just like any other cult. They just want to "save" you.
I know alot of people here shun actually going out and talking to someone about something that bothers them. It is better than playing "I'm angry at you for something" games. They might not get it and just think you're an ass. Remember, they are paying that much to live there too. You don't want to start an apartment cold war.