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November 1953: Julie Harrison of the Hulton Press tries out a protective mask to combat the effects of London's smog. Original Publication: Picture Post - 6799 - Smoke: A Scandal That Can Be Stopped - pub. 1953 (Photo by Carl Sutton/Picture Post/Getty Images)

November 1953:  Julie Harrison of the Hulton Press tries out a protective mask to combat the effects of London's smog. Original Publication: Picture Post - 6799 - Smoke: A Scandal That Can Be Stopped - pub. 1953  (Photo by Carl Sutton/Picture Post/Getty Images)