Summertime, and the city is stinky. Trash bags ooze, urine coats subway platforms, and the scent of frying kebabs curls among the skyscrapers. The warm-weather assault on New Yorkers’ noses has taken place every year since New Amsterdam days, but its specific qualities keep changing. These days, the funky tang of marijuana has become as ubiquitous as cigarette smoke once was — surely a sign that city life is improving.
— Read more at The History of That New York Street Smell, From Manure to Marijuana at New York Magazine.