I know its more fun to be a hysterical drama queen, but if you had bothered to search, you'd find a news story from 1010 WINS that this has already been investigated. Even though they don't yet know the source, the air quality checks revealed no problems, and one resident was quoted as saying he's been smelling it off and on for more than a decade.
sorry to offend. no drama queen. just thought it interesting for a post. you must live in NYC. In that case I understand nothing funny in this.