Why Do Chemical Weapons Still Exist? Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email An Israeli man testing gas mask on April 06 2010. At the time there were reports of a possible American attack in Syria that caused a sharp rise in the number of Israelis seeking gas masks. ( Chameleons Eye / Shutterstock ) Produced by Ellen Frankman Produced by PRI and WNYC