I have never smoked and find passive smoke difficult
When I lived in Newcastle they wanted us to ditch Cars and go by Public Transport. I used to ride the bus and when I got to shop felt ill for first 15 minutes.
Since I have been doing Carpet Cleaning I think I have been to two house where stale smoke or customer smoking causes a problem, I think they were both where there had been a tragedy . I simply say I need all windows and doors open