In Alaska a lot of people carry bear spray, for obvious reasons. This presents a serious hazard when riding on small aircraft or other vehicles. If a bear spray discharged in the cockpit of a bush plane, it could easily lead to a tragic crash.

Float plane pilots will require you to put the spray in a cargo hatch in one of the floats. In the SAR group I volunteer with we sometimes ride in the State Trooper's helicopter. They have a 50 Cal ammo can (the steel kind that seal tightly) where we are required to put our spray when we get aboard. When I ride the tranit buses to go hiking in Denali National Park, I always bury the spray deep inside my pack until off the bus.

I have been told that UV light breaks down the active ingrediants in pepper spray. Obviously this doesn't help when it is discharged indoors.