What does Manhattan smell like?

I'm writing a story about a man who once lived in Manhattan but who now lives in Chicago, but since I've never been to New York, let alone Manhattan, I was just wondering if there are any writers out there (or anyone with a nose) who could tell me some typical smells of Manhattan; that is, pleasant smells that might evoke a pique of nostalgia. The smell itself does not have to be too detailed. In fact, I'll only be using it for one line in the story. But I'd like to avoid the cliche smells of New York, i.e. pizza dough and subway cars perfumed with urine. Anyone?