I don't know the movie or show but there is a scene where someone asks a woman who quick smoking a long time ago (10 years maybe?) if she ever thinks about smoking and she says "every time someone lights up next to me at the bar I want to suck the smoke out of their lungs."

I smoked more than a pack a day for probably 7 or 8 years and quit a couple years after college, not quite cold turkey but basically just trying to wait a little longer between each cigarette. Eventually when the last half of the pack is stale and disgusting but you smoke them anyway because they're expensive, you just kind of stop one day. It was many, many years of no nicotine at all before I stopped thinking about it every day though.

Yeah, sometimes the whiff of cigarette smoke from a passing stranger puts a small, guilty smile on my face.