Bromobenzyl cyanide

Bromobenzyl cyanide (BBC), also known in the military idiom as camite (CA), is an obsolete lachrymatory agent introduced in World War I by the Allied Powers, being a standard agent, along with chloroacetophenone, adopted by the CWS. When implemented in World War I, it revolutionized the use of tear agents due to their extreme potency. BBC is toxic like chlorine gas.