Can always smoke outside so you won't get the smell in your house. It's what most of my relatives do.

Some years ago before I got back to playmobil, I bought a lot of lego which came from a smoker's house. It's been standing quite a while build up in the attic, and the smell seems to be gone. It's an open space and one of the windows is always a bit open.
I believe the smell was gone quite fast, maybe in some months.
Might be different for playmobil though, don't think I had much smoked playmobil. Either way keeping it set up in an open space seems to help.
And put those clickies that smell of smoke in a circle with non smoking clickies, to form a support group. Can't have them swiping sigarettes somewhere and fall back to their old habit.