Wrong ! You do not have the right to set the working conditions. The employer does. If you don't like them, work elsewhere. There is no statistically valid study showing any harm from second hand smoke.
I generally find that the number one issue about smoking in bars and restaurants is whether the owner/manager smokes. I have been restaurants with empty smoking sections but filled no smoking sections and people walking out because the manager is a smoker.
And any owner/manager who operates in such a manner will go out of business. I personally have seen the opposite, and many times have left a restaurant because the smoking section was full. In any case, it's a self-correcting problem, with no need for nico-nazis to stick their long noses into it.
In some states, business advertise the fact that they are smoke free. So, to claim it will hurt business is a very weak argument. Having a smelly, dirty establishment also hurts business.
Advertising "smoke free" is everyone's right. Whether an establishment allows smoking or not should be up to the owner, not some stupid soccer mom with more time and money than sense. And there are studies that have shown it hurts business. Moreover, it's a gross infringement of rights. The market should decide, not crusading pinheads.