Guaranteed to scare the neighbors

When someone asks you to knit them a hat, you don't ask questions beyond "what color?"
But when someone asks you to knit them a gas mask...

Do you ask which war?


Historical accuracy aside, this is more than a little strange.
And the recipient wants to wear it while biking to work.

The mask part itself is attached with Velcro, and was a custom piece, so no pattern (shame).


For reference.