[Happy Monkey]

You just keep trying to make distinctions that don't exist. OSHA laws and anti-smoking laws both make impositions on private property owners' rights for the benefit of people who could go somewhere else. So do handicap-accessibility laws. So do USDA meat inspection guidelines. Also the FDA drug approval process. They all have the same legal justifications. Many people disagree with those justifications, and that is a valid position (though I hope it doesn't become a majority opinion), but I don't see any way to say OSHA is "regulating the environment of workers" and that's OK, while anti-smoking laws regulate the environment of workers (and also customers) and that's "fascist individuals who want to force others to be like them".

Your issue seems to be with the scientific justification, not the legal one.