Aircraft NOS Button

This idea is not to make a plane go faster, like NOS on a dragster, but rather to prevent any of the pasengers getting up to mischief. At the press of a button in the cockpit, laughing gas would be introduced into the cabin of the aircraft, causing all the passengers and terrorists presnet, to be incapacitated (hopefully without permanent harm). The flight crew wouldn't be affected, as they would put on their oxygen masks first, as is common practice in aviation emergencies. NOS as a gas to use is just a suggestion of course, there are probably other more suitable and less potentialy harmful substances available. Apparently research was done on gasses producing LSD-like effects for military purposes, one of these might be more useful. Or perhapse even some form of marijuana-derived agent...