I will be the first to admit true nanny-state laws exist. However, as I've argued in this thread I don't believe the elimination of carcinogenic particulates from the work environment deserves such a label.
But it absolutely, positively, does deserve exactly that label. Because it is a nanny state law. A law being enforced against an otherwise legal activity, conducted on private property, by informed and consenting individuals.
The reason this thread has gone on for so long, much to your frustration, is due in part to a rather irreconcilable difference of opinions regarding the boundaries of government, as perfectly captured in the OP's original question. It's a question that makes you uncomfortable, because no matter how you scuttle and dance and try to justify your position, you know that it boils down to YOU ordering OTHER PEOPLE what they can and cannot do through force of government.
I've read as you have argued what should and should not be permitted in a "civilized society". Apparently, civilization in your mind comes at the expense of personal liberty. We need laws to tell our fellow civilized citizens what is and is not best for them, regardless of whether this affects us personally.
Well, in
my "civilized society" we would respect one another's individual freedoms, even those we do not agree with, and even those that *shock* may carry an element of danger to those whom willingly accept such risk. And if someone in my neighborhood wants to open a bar and allow smoking inside that bar, I would do the civilized thing and allow him to do so, regardless of my opinion on the dangers of SHS. I would not lobby for laws to force my neighbor to run his business the way I want him to because I presume to be more intelligent, classy, or "civilized" than he.
Nor would I seek to prevent smoking in his bar under the presumption of protecting his now and future employees, my fellow citizens whose individual rights I respect, and whom I know to be adults of legal age, capable of making their own big-boy and big-girl decisions. I would not do these things, because that is the civilized thing to do. The civilized thing being, to live and let live. But this will, of course, be lost on you, because you know what is best, and that is just the way it is.