Remember that syrup-like smell of unknown origin that puzzled New Yorkers back in 2005 and then again later the same year? It's back:
The city’s 311 information line was flooded with callers reporting the smell of maple syrup, or something like it, wafting across several neighborhoods, a spokesman for the Office of Emergency Management said.
Read more in Mysterious Sweet Smell From 2005 Returns to Manhattan at The New York Times. Thanks to Joe for the link!