7-10. Choking Agents (Lung-Damaging Agents)

Table of Contents

Chemical agents that attack lung tissue, primarily causing fluid buildup (pulmonary edema), are classified as choking agents (lung-damaging agents). This group includes phosgene (CG), diphosgene (DP), chlorine (Cl), and chloropicrin (PS). Of these four agents, CG is the most dangerous and is more likely to be employed by the enemy in future conflict.

• a. Protective Measures. Your protective mask gives adequate protection against choking agents.
• b . Signs and Symptoms. During and immediately after exposure to choking agents (depending on agent concentration and length of exposure), you may experience some or all of the following signs and symptoms:
• • • Tears (lacrimation).
  • • Coughing.
  • • Choking.
  • • Tightness of chest.
  • • Nausea and vomiting.
  • • Headaches.
• c. Self-Aid.
• • (1) The protective mask should be put on immediately when any of the conditions described in b above exist. Another indication of a CG attack is an odor like newly mown hay; however, DO NOT rely upon odor as indication of a chemical attack.
  • (2) If some CG is inhaled, normal combat duties should be continued unless there is difficulty in breathing, nausea, vomiting, or more than the usual shortness of breath during exertion. If any of the above symptoms occur and the mission permits, remain at quiet rest until medical evacuation is accomplished.
• d . Death. With ordinary field exposure to choking agents, death will probably not occur. However, prolonged exposure to high concentrations of the vapor and neglect or delay in masking can be fatal.