iPhone app helps fight foul smells in cities

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Smell MyCity
Don't just hold your nose. The Smell MyCity app could help clear the air.
Photo: U.S. Fish and Wildlife Service

Smartphone apps are powerful tools — especially one that eliminates foul smells in your city.

OK, the Smell MyCity app is not that powerful. But it does give users a reliable way to report offensive stank. And in some cases, their complaints go directly to air-quality authorities.