World War I respirator (3,4)
I believe the answer is:
gas mask
(Other definitions for gas mask that I've seen before include "It protects against poisonous fumes" , "Wartime breathing aid" , "Wartime safety device" .)
I've seen this clue in The Sun.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free.
Check out my app
or
learn more
about the Crossword Genius project.