I just came across this, and it kind of makes me blink because it's hard for me to believe that Dean *isn't* a smoker, or at least used to be one. It's not a personality thing so much as a class and circumstances thing.

Dean is poor, ill-educated, misogynistic enough to tease his brother about being "girly", had an ex-military father (American military men smoke like chimneys), and grew up on the American road. It would be very hard for a man who grew up the way he did *not* to be a smoker, it's part of the culture.

And this is entirely aside from the role of tobacco in American magical practice, which goes back well before 1492.

Does that mean he has the characteristics you associate with smokers? We-e-ell, yeah, but most of those characteristics are part of the subculture he's in, not just him. Dean's subculture is too poor to value cleanliness, smelling nice, or good health as highly as you or I do -- it places a lot more emphasis on social bonding and on anything that lets you get by on less food and sleep.

That said, it's completely possible that he quit when Sam came back, because I agree that Dean smoking would drive Sam *bugfuck*.