Second World War gas masks.
GREAT WAR: Mustard Gas Victims. Except in high doses, the gas is not fatal, but causes horrid burns and blisters. It will singe the lungs. Infection was a concern. There were no antibiotics to treat any injury.
Wounded World War I Soldier
Pink Floyd (1967)
rock photography, david gilmore - Google Search
Dismembered Soldiers WWI - Facial Injuries
Syd Barrett School Photograph in 1961