If you're old enough, go to some bars. If you overhear anything, ask politely/casually, though that would probably fly here, it probably wouldn't in some places. If you know anybody else who smokes, ask them to take you along next time they get some. Or if you're really outgoing, I guess just straight up ask for the number. But again, that probably wouldn't fly either.
I'm having the same problem.
Hope that helps.