You're probably right about using it as a mask, but it would buy me time to get to a proper mask, or out of the building, in the event of a fire or chemical spill. The warehouse I work in is small and my Jeep is parked right outside so I'm not thinking about hours, but rather minutes.

Good point about clothing. That's a another layer of preparedness that hasn't come up in this thread but, I figure if the remote possibility came up that I was trapped and needed to signal, I'd either be able to improvise something or I'd be trapped and unable to move. Grabbing a bandana from my pocket might be the only option. Very remote but something to think consider when you work in an industrial complex.

A hat? Not likely. One of our Scouts made one out of tin foil this weekend so it's at the front of my brain. I keep a hat close at hand, if not on my head. How about fire alarm + blazing sun + ill co-worker? Leaky fire repression system after the nuke alarm goes off? Belief that the bosses are using mind-control devices?