Laughing Gas (1914 film) squabbling. The dentist arrives, and his first patient goes in, obviously in pain. The dentist prepares the nitrous oxide anaesthesic (also known commonly as "laughing gas" due to its effects prior to and after unconsciousness). With the man unconscious he pulls his tooth, but then he can't get him to wake up. He calls for Charlie and when he arrives the dentist runs off. Charlie tries to wake him and eventually tries hitting his head with a mallet. The man revives but starts laughing. Charlie knocks him out with the mallet. The dentist then returns and Charlie is sent to
CR gas People occupying an area in Notre-Dame-des-Landes against an airport project suspects the use of CR gas by French Police and Army on April 2018. In the late 1980s, CR was used in the townships in South Africa. It caused some fatalities, in particular among children. Because of its alleged carcinogenic properties, the United States does not utilize CR for riot control. The U.S. military classification for this chemical agent is combat class chemical weapon causing serious side-effects for humans. CR gas CR gas or dibenzoxazepine (also referred to as DBO), or its chemical name dibenz["b","f"][1,4]oxazepine, is an incapacitating agent and