Never smoked inside, even before I had a kid so didn't have that issue. Since the late naughties... I never smoked in the car when the kid was in there but after that became a law here (no smoking with kids in the car) for some reason I started smoking in the car less too... although in bad traffic I would.... I always smoked with the window down so while there is a slight scent in my old car (not really on the road for a while) its not too bad and really only on hot days.
So I space bag my winter clothes (jackets, wollies) at the end of the season and I did notice that even though they had been put away clean they smelled of stale smoke when I got them out this winter... so I had them dry cleaned, problem solved.