smokers don't light up around babies as a rule...non-issue
Responsible ones don't, but there are a number of irresponsible ones that do.
Unfortunately, they are also the ones that would take crack, drink alcohol, leave their babies in hot cars while they get their drugs, etc.
I don't know how to make parents more responsible, but I know you can't legislate it.
"smokers don't light up around babies as a rule...non-issue"