Board Thread:General Nerf discussion/@comment-29595756-20170911000128/@comment-26431461-20170917200116

LeTesla wrote: Ah wait I messed up, I confused CO2 with something else. Stupid me Did you mean CO (carbon monoxide)? If so then yeah I agree with what you said before.

And yes, CO2 is also quite dangerous, but usually CO2 powered toys have it in very small doses.

So you're not completely wrong, but it shouldn't really come to a surprise that some toys use CO2 in them (CO2 rockets, airsoft guns etc). Not saying kids should play with airsoft guns, but that's because the BB is the dangerous part, not the CO2.