Personally, I am torn on the smoking issue. I really don't like the smell of cigarettes (but I don't mind cigars or pipe smoke), and even before I turned 21, I didn't like the smell in my hair and on my clothes after coming back from a concert or whatever. The DE smoking ban passed shortly after I turned 21, so I got to enjoy the smoke-free environment. On the other hand, I think such legislation is an infringement on private property rights (people don't have to go to restaurants and bars).
I understand, and I am not looking to get into a discussion on the pros/cons of the ban.
My point for mentioning it was in reference to RWJF's not so subtle attempt at backdooring prohibition through further government regulation of certain types of business
It will not surprise me if this study is used in another of their attacks on the fast food industry. I tend to notice more of the chain type places on the highways of suburban/rural areas than in major metro areas.