How is the need for respiratory protection determined?

• A. Respiratory protection is always required regardless of exposure.
• B. Respirators are optional if you feel fine.
• C. If there is any odor, wear a respirator.
• D. A hazard assessment determines if exposure exceeds safe levels; if so, select and use appropriate respirators and perform fit testing.

Answer: (D)

Deciding whether you need respiratory protection hinges on a hazard assessment that determines whether airborne exposure could exceed safe limits. This assessment looks at what contaminants are present, their concentrations, and the duration of exposure during the work. If the assessment shows that exposure could exceed safe levels, the next step is to select the appropriate respirator type for the contaminant and implement protective measures, including fit testing to ensure the respirator seals properly to the user’s face. Relying on how you feel or on odors is not reliable because many hazards are odorless or may not cause immediate symptoms, and exposures can exceed safe levels even when you don’t notice anything. When exposure is not above the safe level, engineering or administrative controls may be sufficient and respirators aren’t required.