You should add a variant of vanilla brewing (not alcohol) that allows you to mix things to either make useful or deadly chemicals. You could make a medical salve, or deadly mustard gas. It'd make technological warfare much more interesting. To survive deadly gases use a gas mask out of rubber and probably carbon mesh. When your mask runs low replace the mesh. Quantum helmets are considered gas masks. You could call it chemistry. Phahaha. Don't make my high school education useless.
