I am not a smoker.
I think that it is 100% personal choice if any adult wants to smoke.
Just like it is 100% personal choice if a parent wants to leave their child with a smoker dc provider.
I was fortunate enough to stay home with all of my own kids before I started daycare birth to first grade.....if I had needed daycare there is just no way at all ever I would have used a daycare provider who smoked. I have a very sensitive nose and to be honest I can pick up THAT smell a mile away.....
Give me the smell of diapers over cigarette smoke any day!