thanx:D
id like meh some medical flavored nos fersure

lolol
well im not sure you can get high off of CO2 AT ALL, nor do i think that air duster contains CO2
...hmmmmmm but though there may be some sort of inhalant that does do that, i dont really have any idea but it might be interesting to find out.
what gets you high in duster is the hydrocarbons, same thing with air conditioner raiding for "freon" ..freon wont get you high (i dont think) but the hydrocarbons in the unit are what will.
There are different types of hydrocarbons and NO2 probably mimics their action. I believe that they have slightly different effects depending on their shape and size.
Anything that contains ingredients other than the active ones (hydrocarbons/NO2/difluoroethane) obviously could be dangerous.
oh and i might be wrong, they're called fluorocarbons not hydrocarbons.
personally, dust-off never gave me any side-effects worse than nitrous, though nitrous all around is much "cleaner" headier high. i've never tripped as hard as i did when i hit that can though, like nitrous x5
there is also NASTY bitterant chemicals in all duster products so that may also contribute to the bad side-effects.
beyond that i can only guess as to why they would produce different effects, possibly difluoroethane (common ingredient for duster) because of its different chemical shape is just producing a worse high.