Who Me was a top secret sulfurous stench weapon developed by the American Office of Strategic Services during World War II to be used by the French Resistance against German officers. Who Me smelled strongly of fecal matter, and was issued in pocket atomizers intended to be unobtrusively sprayed on a German officer, humiliating him and, by extension, demoralizing the occupying German forces.
The experiment was very short-lived, however. Who Me had a high concentration of extremely volatile sulfur compounds that were very difficult to control: more often than not, the person who did the spraying also ended up smelling as bad as the one targeted. After only two weeks it was concluded that Who Me was a dismal failure.