For a respirator to be effective, its seal must be maintained during movement and talking. The action that ensures this is:

• A. A proper fit
• B. Frequent replacement
• C. High airflow
• D. No speech

Answer: (A)

Maintaining a tight seal between the respirator and the face is essential because that seal is what forces inhaled air to pass through the filter, not leaks around the edges. When you move your head or talk, your facial contours shift, and the seal can break if the respirator isn’t fitted well. A proper fit means you’ve chosen the right model and size for your face and have secured it correctly so the seal remains intact during normal movement and speaking. This is checked by fitting the mask properly and performing a seal check, adjusting straps and the nosepiece as needed, or trying a different size or model if leaks persist. With a good fit, air follows the filter path rather than sneaking in through gaps, giving real protection. Replacing the respirator more often or relying on high airflow doesn’t address the seal itself, and avoiding speech isn’t a practical solution.