Yeah, my roommates all smoke so I don't have to worry about anyone in my apartment smelling it.

I'm more concerned about people outside, but from all of your suggestions I think I will be able to figure it out.

How about ventilation systems.. I know the vents where I'm moving are on the ceiling so should I be worried that the smoke will travel to another person's apartment? The 3rd floor is the top floor, if that makes a difference.