This.
Automotive grade will make you sick before you get high and medical grade is highly regulated so I don’t get this whole thing.
and crack is illegal, but people still use it. 
And most people pull off to the right!
CNN (Albany): NY Governor Andrew Cuomo in closed door special session voting on legislation to ban all NOS in the State of New York in a preemptive move to protect all citizens from the deadly effects of NOS. Voting has moved forward after rumors that all soft drinks over 16oz. were to be deemed illegal as a tag along provision to the NOS bill.
Nitrous oxide is not dangerous to inhale as long as there is a sufficient amount of oxygen (30%) to go with it so you don’t suffocate.
Air dusters and freon have no fucking association with nitrous.