Chlorine is also a component of salt.
I do agree with most of what you're saying, Wlfgang. I just feel that it isn't my right, or your right, to infringe upon the rights of others. Smoke? Be considerate of those around you. That's all. I know that if I were to light up, the first thing I'd ask would be, "Anyone mind if I smoke?" A single "Yes, I do," and I wouldn't smoke.
A little common courtesy would go a long way....