Who is the gov't to institue smoking bans. The last time I checked, cigarette's are legal. Let the market sort it out. If smoking is a big enough issue, then you will see a lot of non-smoking bars and restaurants open up due to demand. As far as somking establishments, if you don't want to be around smokers, don't go there. Also, the excuse about the workers doesn't hold water. If the workers don't want to work in that enviorment they can go to work elsewhere.
The last I heard this was supposed to be "the land of the free". If this nanny state continues to grow, you won't be able to leave your house without getting approval from you local municipal board to do so.
The gov't job is to fix the roads, keep us safe... and that's about it. The rest of this crap, they need to leave alone.