Yet I firmly believe that it is a business owner's choice weather to allow smoking or not. The government has no authority to make the decision for the business owner.
We as consumers have the right to not do business with an establishment that allows smoking. I personally will not eat in a resteraunt that does not have clearly differentiated smoking/non-smoking sections. This is my choice. The same applies to smokers - they don't have to do business with someone that does not allow smoking.