I no longer smoke but the high moral ground is easy to invoke in the case of smoke drift. While overwhelming evidence of adverse effects of passive smoking exist these studies were conducted in cases of confined spaces ie indoors.
I have no doubt some people find the smell of cigarettes offensive but it is less clear that it is a significant health hazard. How would you eliminate the effect of other toxins in the air. Diesel and petrol exhaust emissions in particular are far more toxic. Even BBQ smoke is in theory carcinogenic.
In my block we have a by-law banning smoking and we still get oke drift from the street. Honestly there are more important issues and bigger safety issues. In the future when combustion engines are no longer a feature we will complain about the smell of vintage cars.