This man us standing close enough to the bus stop that everyone -- including some kids -- cam smell him. If he reeked of garbage or beets, it would be considered rude, and he'd be embarrassed to know that everyone is edging away so they don't have to breathe him in. Smokers? Not so much.
Should we give smokers a wider latitude than other notorious bus stop stinkers? Is it enough for smokers to stand far away, or should they also endeavor to stand upwind? Should Muni install weathervanes on shelters?
Yes, we know there are official rules about smoking in public, but those rules are benign. What's the etiquette here, folks?