1) Fair Trade producers are inevitably organised as marketing or agricultural co-ops, and there's at least one tobacco growers co-op (in Tanzania - scroll down to the bottom of this linked page to find their contact details)
2) There seem to be lots of 'lifestyle' goods gaining the fair-trade label beyond food - fashion clothing, footballs...
3) An ethical dilemma? Well, to my knowledge the Fair Trade foundation who administers the mark have no stated restrictions as to the types of goods that they can't assure on the basis of ethics
For the sake of all those smokers who want to be more ethical, let’s help them at least change the impact they have on poverty through the 'lifestyle choices' they've made (just like we do for those people who can't quite kick their love of chocolate or alcohol in the form of wine...)