Carol,

I appreciate your input into this discussion. I understand your reasons for writing the song, and they're quite justified.
However, it appears that your song will only work in context - i.e. in the open air, in a supposedly 'smoke-free' environment which is being polluted by uncaring smokers.
Taken out of this context it reads like an attack on ALL smokers, most of whom are fully aware of the damage smoking can cause to others and will go out of their way to avoid inflicting it on them.
If the OP had added a note explaining why the song was written, and in what circumstances, people on this forum would, I know, have been a lot more understanding.