Wow, there are a lot of really stupid people on this board.

Nitrous is NOT dangerous unless you do something really stupid. Just like weed. Or alcohol. Or Tylenol. The only danger is accidently doing something stupid while under the influence. Just sit on the couch and that risk is gone. Oxygen deprivation is NOT an issue at all. It's only in your lungs for a few seconds. Just like taking a lung full of smoke. Or holding your breath. The only way people kill themselves with nitrous is by doing really stupid things, such as rigging up a nitrous mask, then they pass out and suffocate. I say good riddance to them. If it was really that dangerous do you think dentists would be giving it out so willy nilly?

The only other minor risk is the depletion of vitamin B12 with long term use. As long as you don't use it every day for a very long time this is not an issue. You can also consume extra B12 vitamins.

The fact that it is used in cars is completely, totally irrelivant. So is alcohol, but you wouldn't think twice about drinking a shot, would you? The nitrous they use in vehicles is poisoned with sulfur specifically so you cannot use it to get high.

When purchased in bulk online, (50-600 hits) nitrous is a cheap, safe high. (medically and legally) No, it doesn't last long, but that 1-2 minutes is heaven. And it's easy to buy, legal to possess, and doesn't show up on any drug tests. It's even better in combination with weed.