What type of agents are dispersed as aerosols and affect by inhalation or direct action on the eyes?

The correct response relates to the nature of vomiting agents, which are designed to incapacitate or disrupt normal functioning primarily through inhalation or contact with mucous membranes, including the eyes. These agents induce incapacitation by causing intense nausea and vomiting, thereby rendering the affected individual unable to perform tasks effectively.

Inhalational exposure to vomiting agents can lead to immediate physiological responses, including gastrointestinal distress, which inhibits a person's ability to focus or carry out military duties efficiently. The routes of exposure are significant: aerosols can easily enter the body through the respiratory system or the eyes, allowing the agent to exert its effect quickly and incapacitate personnel in a combat environment.

Other types of agents, such as choking agents, blood agents, and blister agents, have distinct characteristics and modes of action that differ from the incapacitating effects produced by vomiting agents. Choking agents primarily damage the respiratory system, blood agents interfere with oxygen delivery within the body, and blister agents cause severe skin and mucous membrane irritation. Hence, while all these categories of chemical agents pose significant risks, vomiting agents specifically relate to the described properties in the question.