[MrLeRoy]

In my opinion, local zoning regulations reflect the restrictions that in a free society would be enacted through voluntary mechanisms

Then you believe that a free society can enact smoking bans.

No, I do not believe that even a local group of property owners would mutually contract to disallow smoking on their property. Why would they?

[cinFLA]

No, I do not believe that even a local group of property owners would mutually contract to disallow smoking on their property.

They have, many times. It's called a no-smoking ordinance.