We had beautiful weather this past weekend. While out, I saw a man standing about 1 foot away from a car. smoking and talking. When I got closer I could see that he was talking to a young child in a car seat. What I heard was him going over the day's schedule, telling the child what they would be doing and carrying on an ongoing, but audibly one-sided dialogue.
I don't know that standing one foot away to the open window really protected the child from smoke, I admire him for keeping the lines of communication open, even while he had to have a smoke.