Is there such a thing? I’d say not although there definitely are city smells. In my extended family we refer to the New York smell, which is made up of car exhaust, uncollected garbage and yes a tiny touch of urine. And before anyone says “How awful!” let me point out that members of the same family get nostalgic for this scent and have to go into the city just to huff. True fact.
Charleston SC seems to have a pleasanter smell, with the exhaust cut by a bit of horse manure and flowers. I quite like it. Montreal always smells of frost and grit to me, Philadelphia has some frying oil in the air somewhere, Chicago has got that frost and grit thing going on plus some smell tossed up by railroad tracks and stockyards. The universal smell of North American cities seems to be predicated on carbon monoxide. I’m not certain that anyone has succeeded in bottling it.
What does your locality smell like? If it’s anywhere in the US, tomorrow it’ll probably smell of barbecue. Happy Fourth of July!