It isn't merely for public health issues that laws trump property rights. Zoning restrictions are an example which has little or nothing to do with public health.
There is no doubt that second hand smoke is bad for one. I can tell the difference in my breathing and eyes after heavy exposure to cigarette smoke. No study is necessary to show me that it is bad for me.
One has to be pretty silly to pretend there is no harm in breathing smoke.
Even zoning restrictions normally have to do with health or safety issues.
Businesses that require heavy machinery aren't zoned for residential neighborhoods because of safety concerns with traffic or children.
Businesses that require the use of volitile chemicals aren't normally zoned for reidential or downtown because of safety concerns for the populace in general.
As for ETS causing harm, do your concerns also carry over to car exhaust? Smoke from your neighbor's fireplace chimney? Your, our your neighbor's, grill?
Understand, there are certain risk factors involved with smoking. These risk factors have not been scientifically proven to be linked with ETS.
An anology is, the jury is still out but the vigilantes are hanging folks anyway.
Anyway, we're not talking about zoning but regulation. Again, normally something is regulated due to health concerns that the public can't see for themselves about. Food storage, food preparation, cleanliness of preparation areas, the temperature that food is cooked, etc.
These are things that the general public don't normally see in their dealings with the business.