... second hand smoke did help some asthma patients ...
Even though I'm not a "ban smoking everywhere Nazi," I can't buy either of those statements.
Second hand smoke could precipitate asthmatic attacks in asthmatics sensitive to it. So those asthmatics should avoid exposure, and smokers around them should likewise be sensitive to their needs, especially parents of children with asthma. Kind of like people with diabetes avoiding sugar-concentrated foods, and parents of children with diabetes being responsible and knowledgeable about their needs.
Along those lines, strong perfume can do the same thing. Out law perfume.
Why not ban noise and strobe lights because of epileptics?
A modest suggestion: Would you not learn something from the UN WHO report which was suppressed? It was compiled by experts in the medical field, immunologists, researchers and other scientific experts in their field.
Why should anecdotal evidence and neuroses drive laws?
Just a suggestion.
In his early 30s he started smoking at a time of real stress in his life. He never smoked much, about a pack a week, but sometime in there his asthma went away. We have no idea what happened because not much else had changed in his life. He lives and works on a farm in the house he was born in, the same things grow year after year, there is no obvious explanation unless you think about the smoking. BTW, he did stop smoking a couple of years ago and the asthma didn't return but he does get my second-hand smoke.
I'm not seriously championing trying smoking to cure asthma, it could have been anything, but as far as the asthma went the cigs didn't seem to harm.