My father smoked more then a pack a day, from the time he was 17, till 70. I have been raised around second hand smoke my entire life. When my father passed, doctors were shocked that smoking in NO WAY contributed to his brain cancer at all. And when it comes to the rights of purple, i don't smoke, i don't care if you do. If it bothers me, i move.
That's why businesses had smoking and non smoking sections.