Locker and crate smokes/foams

[KikiMofo]

I don't really mess with chemistry, since I don't know it. Can you not make beaker assemblies that have a proximity sensor?

You can yes but I'm not sure if they work inside of a locker. Someone update me on that.

Also yeah Lavastage I know what you mean but that seems more of a glitch than anything because you aren't being harmed by what you made at all.