In either case, whatever it does, we need to keep this stuff away from kids. I have two cans of compressed air. I put them on the very top shelf in my computer room. I have kids over quite a bit and you know how you don't want people messing with your computer and all? I told them the same thing how the computer room is off limits unless I give permission to use it. And when they do go in there, they can't see the can up there because of how little they are. I also supervise them because I hate it when kids mess up my icons and 'accidently' delete something. Oh brother, the mess they can get themselves into.
WHen I was young, I thought it was pretty cool too how the air inside shoots out and how the can freezed up on the outside. It was fun. I shoot it in the air at times just to play with it. I soon came to realize the hazard associated with the compressed air when my dad caught me playing with it. He didn't yell at me, but sat down next to me on my bed and reminded me of the danger of using the Dust Off. Being a good boy as I am (I'm such a saint), I listened and took him seriously and treated the DUst Off as a tool only. Never to be played with. From that day on, that's all it was. Simply a tool to removing dust bunnies from the computer, keyboard, etc.