Smoking Assault

Radley Balko warns of creeping nanny-statism:

The California state assembly is now considering a law banning you from smoking in your own car if your kids are riding with you.
Make no mistake, they’ll be in your home next.

Radley, you are correct. There shouldn’t be any additional laws necessary regarding this. Assault it pretty straightforward and the kids could certainly sue concurrently or later. It shouldn’t take many assault convictions and successful law suits to pretty much eliminated this problem.
I consider adults who smoke in cars or even in their homes with accompanying children to be a bit senseless, if not stupid.
On the other hand, if it is a privately owned establishment that is clearly labeled as a smoking environment then consenting adults should be free to patononize or work there without any outside interference.