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The First World War was well underway when — on April ... Cluny Macpherson, a Newfoundland doctor who devised an early gas mask — known as the hypo helmet — that would go on to save hundreds ...

As war raged across Europe between 1939 and 1945 people were given gas masks to protect them from possible airborne gas attacks by the Germans. This gas mask has been passed down through the ...

The First World War was the first-time poison gas was used on a large scale during war. The gas could affect someone in just a few minutes so protective masks were given to all soldiers.