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Alarming and fake poster about NYC subway-airflow-study freaks out some riders

Posted: 4:00 PM, May 14, 2013
Updated: 2013-05-14 16:39:06-04

The poster, featuring a man in a gas mask and advice to stay calm, has been popping up around the subway system and circulating online.

While  the airflow study the poster is describing is true, the alarming sign isn’t authentic.

The study is designed to see how airborne contaminants — released accidentally or on purpose — would work their way through the system.

The MTA has instructed crews to remove the posters in the system.

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