This type of thing has been around for quite a while and amazing you haven't heard of it. It is bad but a quick and deadly high...people have been known to do Dust off, butane, whipits, and glue and gas. I have tried it myself in Okinawa back in 1988. Boredom and too much drinking and just wanting to try different things. People will do anything for a high. Something else that some parents don't know about which happend recently here in Idaho is being knocked out. I am sure we have all done it and it has been around for a long long time. Getting knocked out by holding your breathe and a friend squeezing your chest or throat. You pass out then wake up. Unfortunately a young girl died of this just about a month ago here. Simply talk to your kids and hope for the best, we can't hold their hands 24/7....we all survived thru everything we did without helmets and all. take care and stay informed!!