Except that, as I've mentioned -- no business has the right to poison its employees. Which essentially is what your saying that those owners are free to do to everyone who works for them. I don't think the connection between 2nd hand smoke and cancer/COPD need be reiterated.
If you seek employment in a pub called "Cigar and whiskey", then you pretty much know what you will be dealing with on a daily basis. It's not like anyone is forced to work in places that specifically caters to smoking customers. As I said free market and it includes job market as well.
I agree with Ace. As I've said before, I completely despise smoking but if a business wants to cater to a specific demographic -- smokers in this case -- and as long as full disclosure of this is provided to prospective employees & customers, I've got no problem with it. If, hypothetically, it were legal to smoke in such environments, personally I'd never under any circumstances work there or frequent the place as a customer. But I know a few smokers who wouldn't mind being there.
It's about personal freedom -- if society considers the practice legal enough to allow it at all, then it should be allowed in conditions where like-minded individuals are allowed to gather provided that they do not infringe on the rights of others. OTOH, if a society chooses to ban tobacco altogether, I'm not going to complain about it. I'm not arguing in favor of tobacco -- smoking is a filthy, disgusting habit with absolutely no health benefit whatsoever, and I'd gladly vote to ban it completely. But as long as it's legal, smokers should be allowed some opportunity to practice their hobby in a fashion that doesn't impinge on the health or rights of unwilling bystanders. The key is designating areas where smokers are isolated from non-smokers, and in providing full disclosure to anyone
before they enter such a location. Nobody is forced to work at a bar that allows smoking -- employees choose to be there, and someone applying for a job at such a place has a right to know what they're getting into before they accept a such a job.
Of course, I'm perfectly fine with other forms of social engineering designed to discourage smoking -- high taxes on tobacco, penalties on health insurance premiums for smokers, etc. And I wouldn't object to positive incentives, such as tax breaks or other subsidies to people who engage in healthy behavior -- buying fresh vegetables, paying for a gym membership, etc.