Do you think that if a smoker could smell what a non smoker smells every time they return from a smoke break they’d carry on smoking?

No, im an ex-smoker, it can be over powering, but i can move away or even ask politely for them to move if they have entered my space and it's too much. Its weak to be antagonistic and aggressive about it. I'll admit i dont like women in burkas because i cant see thier face and make a judgement on their demeanour but im not rude about it. The same with people in crash helmets. There's no need for intolerance and being rude!