I've been reading a lot today about different ctb methods involving asphyxiation or toxic gases. Inert gases through exit bags & mixing hydrogen sulphide or even just painful gases like hydrogen chloride seems to come up a lot, but I haven't seen any mention of pure hydrogen gas which seems a little odd to me since there's a lot of very easy chemical reactions to produce it. Is it just that it's not viable to produce a large enough amount of it to asphyxiate?
Do you mean to produce hydrogen at home for later use in inert asphyxiation? If that's the case I can se some big obstacles to overcome such as purity, the amount and finally how to compress the gas for later use. To compress low pressure hydrogen to a high pressure cylinder would involve som special equipment, any diy methods would compromise the purity of the gas. Then how pure is the hydrogen in the first place?
Also the inherent danger of making a highly flammable gas at home, a spark is enough to ignite the gas. An old light switch for example.
I can appreciate your ingenuity, but surely the hurdles of sourcing inert gas is lower than producing it at home. Nitrogen is also not flammable or poisonous making it possible to be shipped a prefilled cylinder, I received a 200 bar 5 liter nitrogen cylinder in a package.