Smoking bans at business's have shown not to have suffered financial loss in the decades since being implemented. In fact the smoking bans in business's have shown to draw in new customers who are non-smokers. I know when I was smoking I actually preferred non smoking business's. Even in the era prior to smoking bans I flew AK Airlines for my job and was a frequent flyer who even though I was a smoker then did not sit in the smoking section.  I could not stand the cloud of smoke, the smell.