Which type of agent primarily affects the respiratory system and can cause choking?

Choking agents are specifically designed to affect the respiratory system and can induce symptoms such as coughing, choking, and asphyxiation. These agents typically irritate the respiratory tract and can lead to difficulty breathing or respiratory distress. They work by damaging the tissues in the lungs or causing fluid to build up in the pulmonary system, which is particularly dangerous and can be life-threatening.

In a military context, recognizing choking agents and understanding their effects is crucial for the appropriate protective measures and responses during chemical warfare or toxic exposure situations. This classification of agent is distinct from the other types mentioned, highlighting its specific role in impairing respiratory function.