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There were actually 3 gases used in World War I.

  • Mustard gas (named for its color and smell, also known as Yperite)
  • Chlorine gas
  • Phosgene gas (carbon dichloride oxide, an industrial reagent that was in weapon stockpiles for several decades afterward)

Tear gas was also used, which was not normally lethal.

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14y ago
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14y ago

Zyklon-B was used in the gas chambers of the Holocaust.

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15y ago

Undoubtedly, chlorine. It killed almost as many on the side using it as the enemy, and led to the development of chemical warfare.

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14y ago

No, the Paris gun (Axis) was the most dangerous gun of WW1, having a range of 130km, it could bomb huge distances, like bombing the Isle of man from Dublin.

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Q: What was the deadliest poison gas in World War 1?
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