> Primary forms of chemical weapons include nerve agents, blister agents, choking agents, and blood agents... Blood agents interfere with the body’s ability to use and transfer oxygen through the bloodstream. Blood agents are generally inhaled and then absorbed into the bloodstream. Common forms of blood agents include Hydrogen Chloride and Cyanogen Chloride.
Hydrogen chloride does not interfere with transporting oxygen. I think someone made a typo and mean hydrogen cyanide (cyanogen chloride does interfere with oxygen transport).
Hydrogen chloride is found in pool chemicals, toilet bowl cleaner. Pretty sure we don't use chemical weapons to clean our toilets.
https://www.armscontrol.org/factsheets/Chemical-Weapons-Freq...