HUFFINGTON POST
12/07/2011 09:47 am ET

What's Behind The Subway Bread Smell?

With more than 35,000 Subway franchises in the world (and close to 25,000 in the U.S.), it's hard to avoid the bread-y aroma emanating through the streets. You know the smell. It billows for a good hundred yards from seemingly strategically placed vents.

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