I understand these concerns and they are valid.  My major concern is the city is going a bit to far in some areas.  I smoked when my son was an infant.  One day, when he was about nine or 10 months old, I was standing in the front yard with my son in my arm.  I looked at him and he was laughing whenever I blew the smoke out.  It suddenly hit me and I came to the realization that he was sharing the smoke that I puffed out.  That was the turning point for me.  I quit smoking cold turkey that night and I'm happy to say, my son has not picked up the habit.