Forms of chemical agents include: blood agents, which includes cyanide, arsine, cyanogens chloride and hydrogen chloride; choking agents, which includes chlorine, diphosgene and phosgene; other nerve agents; and vesicants, which includes distilled mustard, ethyldichloroarsine, mustard-lewisite mixture and forms of nitrogen mustard.
Chemical Emergencies Overview
The CDC has a key role in protecting the public's health in an emergency involving the release of a chemical that could harm people's health. This page
provides information to help people be prepared to protect themselves during and after such an event.