I am a smoker, and I take no offence to this question, to be comletely honest, I would not want smoking in my room either.
I have NEVER heard of a hostel that lets smoking in the rooms, not only does it limit the people they can put in those rooms ( allegys and non smokers), but I bet its a safety violation almost anywhere. So I would have to say, don't worry about it, most hostels have smoking areas, or a bar that is in the or attached to the hostel.
to the Travelpunk family!!!