For which scenario are respirators necessary?

Respirators are necessary in scenarios involving potential exposure to airborne contaminants, such as during the cleanup of chemical spills. This situation often involves hazardous substances that may release harmful vapors, dust, or aerosols into the air, which can pose serious health risks if inhaled. Respirators provide a protective barrier to filter out these dangerous particles, ensuring the safety of the individual performing the cleanup.

In contrast, working with non-infectious patients, performing administrative tasks, or taking breaks in a lab setting typically do not present the same immediate risks of airborne contaminants that require the use of respirators. This is why in the context of safety and health protocols, the option that involves cleaning chemical spills necessitates the use of respirators as a crucial protective measure.