If you smoke right before entering the bus or in front of the bus, it will be nearly as bad as bringing your cigarette inside. Also, I cannot go away from the bus stop. I have to wait for my bus, and will be forced to inhale your smoke.
If you smoke in front of an entrance, I cannot always find another way inside. I will be forced to pass you and try to hold my breath for long enough.
If you smoke while walking or standing in a narrow path, I cannot always find another one or walk into the traffic. Even if I pass you, the smoke will be in the air for a long time and it is not always possible to hold my breath for that long.
When you smoke, you bring that smoke with you for a long time. Your smoking is none of my business before you make it my business by forcing me to deal with it.
I am an asthmatic and I cannot escape.
