Likely difficult to outlaw them. Anyone could get the materials to make a mask if they developed the skill. It'd be illicit booze all over again, except that all of the technologies you need are even more readily available and there's probably no chance in poisoning yourself.
Potential Constitutional issue as well.
You could possibly put them behind an ID gate so you have to disclose your ID to purchase which gives a trail back to you.
Likely difficult to outlaw them. Anyone could get the materials to make a mask if they developed the skill. It'd be illicit booze all over again, except that all of the technologies you need are even more readily available and there's probably no chance in poisoning yourself.
Potential Constitutional issue as well.
You could possibly put them behind an ID gate so you have to disclose your ID to purchase which gives a trail back to you.