NY1 VIDEO: On October 28, 2005, there was something in the air in New York City and it smelled like maple syrup. NY1's Molly Kroon filed this report on that day about the efforts to sniff out the source of the smell that had New Yorkers wrinkling their noses and officials scratching their heads.

NY1 FOLLOW-UP: The smell would reappear a few times, and the source remained a mystery for several years. Then in 2009, the city announced it had traced the smell to a flavor and fragrance factory in New Jersey.