No prizes for guessing what is used in a simulated tear-gas attack: a canned air-freshener.

CNN: THE SOUNDS OF CONFLICT

With the Chemical Weapons Convention (CWC) awaiting action by the U.S. Senate, the treaty's supporters are asserting that the Tokyo subway poison gas attack demonstrates the need for U.S. ratification.

CENTERFORSECURITYPOLICY: Blowing Smoke About Making Deadly Gas

Stubby, as the dog became known, comforted the wounded and was devoted to his comrades, warning them at one point of a gas attack and giving them time to don their gas masks.

WSJ: Letting Slip the Real Dogs of War