BUMP!
I have a friend who is a Board Certified Pulmologist...He is a doctor that I would take my own family to. And I don't say that about many doctor's.
We have had this discussion, and he say's that for adults long-term problems from second hand smoke is a bunch of hooey... Although, second-hand smoke does ( generally short-term..) contribute to health problems..( ie: ENT type problems..) in small children.
FWIW..........