I have actually ordered chloroform from Amazon before. I've actually still got that huge bottle of it in storage too somewhere afaik. Yes I was completely amazed at well anybody simply allowing me to buy something like a liter of it with no checks whatsoever and to then ship it through the mail (which I had thought was also illegal, or at least everything from toxins to bullets to butane lighters to radioactive and car batteries etc aren't supposed to be shipped but everyone does it anyway?). Which if I ever locate it I may have to at least air out if not dispose of because apparently the shit can release phosgene as it decomposes.
To be fair, I had actually gotten it for use as a solvent and largely just ended up using it when acetone or ethanol or whatever couldn't strip something like glue off. Or to try and use in making tinctures and extracts since I heard you can with butane didn't want to use that or alcohol until realizing I didn't trust myself with trying to extract herbal remedies with it.
I have no idea if you can still buy all these sorts of things on there though.
But as for the gas, I have discovered that apparently some North Americans get high from air horns in this way. As in, they blow the air horn in their face and huff ithttps://www.youtube.com/watch?v=4BmrJeEv8E4
I would actually highly recommend against this. There are a lot less retarded and extremely dangerous ways to get high. Hell you could even just smoke some coleus blumens leaves if they dont have pesticides. Just don't get brain damaged from huffing compressed gases.