Compressed Air

Hey All,
I was just thinking....you know those bottles of compressed air they sell to clean out dust and stuff like that? well, those have got to be a real strong source of tons of fresh, cold, and carbon 02 rich air, right? Anyone ever try spraying them around the plants?

I think since those are usually just O2 then it wont do you much good to spray around your plants. You want to increase the CO2 levels and I dont think those canisters really contain any of that.