text: A puncture in the can could cause the contents to come out faster than what can be regulated.  This could rip the can out of your hand (or worse).\nIf incinerated, the heat would vaporize and remaining solvent and propellant in the can building the pressure to something much greater than the can was designed to hold.  Kaboom.  Upon exploding, any flammable liquid the was inside would be allowed to burn as well.