A cat causes the explosion of a gas chamber for the destruction of animals (Canada, 1936)
The gas used in this case was explosive but its nature was not specified. It was very likely hydrocyanic acid, or hydrogen cyanide (HCN), the explosive component of Zyklon B (invented in the 1920s). Here the occasion presents itself for me to recall the explosive nature of that gas, sometimes used to kill pests or…