RUDE COMMENT DELETED BY MODERATOR

if you ever have been on a moving bus before or had any imagination whatsoever, it is not unconscionable to think that a passenger could be acting suspiciously, maybe even belligerant if asked to stop. Those busses are often double deckers. The ventilation is such that air would recirculate within the cabin, not pass freely through any vents. if they were all subjected to unexplained strange smokes and smells, darn right there would be a lot of emergency calls! especially in a country where the public transportation system had already been successfully targeted before.

"smoking aids" my foot! If a passenger had a legal medically prescribed aid, the driver should know about it, and sequestered the rider so as not to put any other passengers in inconvenience, nor in harm's way. Those medical devices have noxious fumes and if someone absolutely needs that kind of attention, let them rent a private coach or taxi and not succumb the rest of us to smoke and terrible smells - especially as it was done in a manner to obviously try to circumvent the passenger etiquette rules, the passenger probably looked like he had devious intentions or no regard for society.