Tell the health inspector that he hasn't proved that your failure to clean a filthy restaurant has harmed anybody yet.
You have assumed again. I am agreeing with you that if you don't clean your restaurant, don't keep the vermin away, serve spoiled meat, don't wash your hands after using the bathroom and then preparing, or serving, food that there IS proof of harm in those things. It can be, and has been, proven. There are no dissenting scientific views on these things.
Cite me the scientific study that has not been debunked, thrown out of court, or used cherry picked data that Environmental Tobacco Smoke harms anyone that does not have a pre-existing medical condition.
I'm willing to bet that I can find a study that says it doesn't for every study you find that says it does.
THAT is lack of proof of harm.