"PO-X"
The gas used in cluster shells is essentially something resembling chlorine in combination with other chemical or organic compounds.
PO-X has a damaging effect in any way of penetration into the body. Lesions of the skin, nasopharynx and upper respiratory tract occur even at low concentrations of gas. At higher concentrations, along with local lesions, general poisoning of the body occurs.
The article is taken from the historical journal "Chernorusskiy vestnik"