Mystery of NYC maple syrup smell solved!

Join Our Community of Science Lovers!

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American



On supporting science journalism

If you're enjoying this article, consider supporting our award-winning journalism by subscribing. By purchasing a subscription you are helping to ensure the future of impactful stories about the discoveries and ideas shaping our world today.


New York City mayor Michael Bloomberg today announced that the city had solved a years-old mystery, pinpointing the source of a maple syrup smell that has occasionally wafted into town since 2005. The harmless scent, Bloomberg said, is "the result of the manufacturing of fragrances and food flavors" in a New Jersey plant.

The North Bergen facility belongs to a company called Frutarom, based in Haifa, Israel, that apparently processes the seeds of the herb fenugreek. (Bloomberg noted that other facilities may also contribute to the smell, but Frutarom seems to have been responsible for the most recent occurrence, in January.) The seeds contain an aromatic compound, sotolone, that is also found in maple syrup, so they are sometimes used to produce imitation syrup flavoring.

During a news conference at city hall, Bloomberg showed on a map how citizen reports and readings of wind direction helped pinpoint the odoriferous culprit. "Given the evidence, I think it's safe to say that the mystery of the maple syrup mist has finally been solved," he said. But since the scent poses no health hazards and Frutarom does not appear to be in violation of any laws, the mayor said, "it just happens to be one of the aromas we will have to live with."

Photo of fenugreek seeds by Sanjay Acharya via Wikimedia Commons

It’s Time to Stand Up for Science

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in that two-century history.

I’ve been a Scientific American subscriber since I was 12 years old, and it helped shape the way I look at the world. SciAm always educates and delights me, and inspires a sense of awe for our vast, beautiful universe. I hope it does that for you, too.

If you subscribe to Scientific American, you help ensure that our coverage is centered on meaningful research and discovery; that we have the resources to report on the decisions that threaten labs across the U.S.; and that we support both budding and working scientists at a time when the value of science itself too often goes unrecognized.

In return, you get essential news, captivating podcasts, brilliant infographics, can't-miss newsletters, must-watch videos, challenging games, and the science world's best writing and reporting. You can even gift someone a subscription.

There has never been a more important time for us to stand up and show why science matters. I hope you’ll support us in that mission.

Thank you,

David M. Ewalt, Editor in Chief, Scientific American

Subscribe