Can you imagine if that was your superpower. You just walk around and not machines, not tools, but guns specifically get disassembled in your presence.

Reminds me of a Nancy Kress story about a group of suburban terrorists who go around with a "dissambler" (nanotech) that erodes machinery in order to undermine a nanny state government that tries to keep a lid on technology. It eventually comes down to an arms race between different tech factions, and the idea of government is dissolved completely as the world descends (ascends?) into an anarchic-commune type situation.