^I think cigars smell even worse than cigarettes, although they're both awful. I guess pipes are the least objectionable in smell to me, although far from pleasant. (My father smoked a pipe in my youth, although eventually he stopped doing it when I was in the room, and then eventually quit.) As for pot, I find it unpleasantly pungent, but not as bad a smell as tobacco. I don't much care for any really strong aroma except certain foods, I guess.