What are vesicant agents (types of agents that may be used in chemical terrorism)?

Sulfur mustard (H), distilled mustard (DH), nitrogen mustard (HN 1,3), mustargen (HN 2), lewisite (L), and phosgene oxide (OX). More lethal than pulmonary agents and cyanide agents. Sulfur mustard smells like mustard or garlic. Symptoms appear within 4 to 8 hours, but cellular damage occurs in 2 minutes with agents such as lewisite and phosgene. Vesicants affect the skin, the eyes, and the airway. Large dosage affects the bone marrow.