Of course when you go to the electronics store, the electronics grade IPA just sits on a shelf. And the drugstore has rows of their low grade stuff which probably burns just fine.
The irony is if use a flammable storage locker is it concentrates what fumes you do have. Yeah, they vent them, but still. And the doors in theory shouldn't produce a spark.
Somehow, I find the IPA bottle sitting around the office just fine.