On November 25, 1942 American Zionist Rabbi Stephen “Six Million Jews” Wise made public two documents—supposedly given to him by the U.S. State Department—which confirmed that Hitler had a plan to kill all Jews in occupied Europe before the end of 1942, and that the Nazis had abandoned expensive ‘gas-rooms’ for injection of bubbles as a means of killing off European Jewry.
Source Article from http://www.destroyzionism.com/2013/05/12/anti-semitic-death-bubbles/