As no one else mentioned it, depending on which country you are in, you should never try to pick up a tear gas canister shot/thrown at you as you might confuse it with a flash bang in the heat of the moment. There is a long list of people in France who tried to throw back flash bang grenades and lost a hand as a result.
Tear gas grenades used in France are GLI-F4's ( https://en.wikipedia.org/wiki/GLI-F4_grenade) and not flash bangs. It actually contains more TNT than CS gas to get a blast effect (similar to flash bangs)
Had to read up a bit, but either way i seem to have mixed something up. I did not know the French tear gas grenades also had TNT in them. But I read about such flashbang/teargas mixups before their introduction in 2011. The non french sources are a bit muddy, but Vital Michalon seems to have died at Superphénix due to a sock grenade damaging his lungs?
But nevertheless it seems i mixed up France with Switzerland here. Though I cant find the original source I had in mind, Guy Smallman had his leg severely injured in Geneva during the 2003 G8 summit by a shock grenade.
