For decades people smoked in public... wherever, wherever they wanted and no big deal was made of it. I lowered the window when a person smoked in a car.
And a much, much higher percentage of the population have asthma, emphysema, and other lung conditions that can be exacerbated by stewing in smoke for hours.
The conditions you mentioned are caused more by smog than any short term exposure to second hand tobacco smoke. My cousin had emphysema...never smoked but lived near the refineries on the Gulf Coast.
“For decades people smoked in public... wherever, wherever they wanted and no big deal was made of it.”
I image that back then the smoker, realizing smoke was an intrusion, would politely ask “mind if I smoke” before lighting up.
“I lowered the window when a person smoked in a car.”
Hard to do in an airplane. . though some have tried.