I know of exactly one fanart where Dean smokes, the one where he's part of that tarot deck. Hey, maybe you should ummmmm make like a smoking reclist or something. For your benefit, y'know, so you can keep track of them easy. Yeah.

What is your favorite smoking SPN fanwork?

I used to be super into Boondock Saints fandom! The Winchester and McManus brothers need to meet up and team up and fight crime. Between them, they've got the supernatural evil and the regular kind covered.