What is the name of the first chemical agent ever used in warfare that has a distinct odor of bleach?

The first chemical agent used in warfare that has a distinct odor of bleach is chlorine. Chlorine gas was notably used during World War I and is recognized for its strong, pungent smell that is reminiscent of bleach, due to its chemical properties. It was one of the earliest toxic agents employed in combat, causing respiratory problems and eye irritation among soldiers exposed to it.

Understanding the characteristics of chlorine is important in the context of chemical agents in warfare. Its historical significance highlights how early chemical warfare tactics were employed and the severe effects these agents have on human health. The use of chlorine in warfare marked a significant and tragic development in the tactics of combat, leading to the eventual establishment of regulations and conventions concerning chemical weapons.