38) occurs when people come in direct contact with a harmful agent at or near an incident.?

The scenario you're describing is known as "acute exposure." This occurs when individuals are directly exposed to a harmful substance or agent, such as chemicals, radiation, or biological pathogens, at or near the site of an incident. The effects of acute exposure can be immediate and severe, depending on the nature and concentration of the harmful agent. Prompt medical attention is often necessary to mitigate health risks associated with such exposure.