HAZMAT Technician Practice Exam

Irritants, commonly known as riot control agents, primarily affect the respiratory system and the mucous membranes. The correct choice highlights that these agents can induce respiratory distress, which is characterized by difficulty breathing, coughing, and a burning sensation in the throat and lungs. Additionally, copious tearing is a typical response, resulting from the irritant's effects on the eyes. This tearing is a protective mechanism as the body attempts to flush out the irritant.

The physiological response is primarily due to the activation of pain receptors and the subsequent inflammatory reaction that leads to physical symptoms. Although other options mention severe effects like unconsciousness and neurological damage, these outcomes are generally associated with more harmful substances rather than standard riot control agents, which mainly cause acute, short-term irritation rather than lasting damage.