Weapons aren’t designed for disassembly. Mustard agent, commonly referred to as mustard gas, is a deadly chemical weapon that has a similar smell to the condiment. Used widely during World War I, the liquid agent is dispersed in the air like a mist, where it then blisters any flesh it encounters. This is grotesque and painful on exposed skin, and especially fatal when it gets inside lungs. It’s a particularly gross, awful weapon, and one with the added downside of flying back at the people who unleashed it if the wind shifts.