Structural Pest Control Applicator Practice Exam

How should a respirator be fitted for proper use?

1. It should fit tightly without air leakage

2. It can be loose for comfort

3. It should be adjustable for different face sizes

4. It can have gaps if the wearer is not experiencing discomfort

The correct answer is: It should fit tightly without air leakage

For a respirator to provide optimal protection, it must fit tightly to the wearer's face without any air leakage. A proper seal is essential because any gaps can allow contaminants to enter the respirator, compromising its effectiveness. Therefore, a tight fit ensures that the air inhaled passes through the respirator's filters, effectively reducing the exposure to harmful substances. While adjustability for different face sizes is a valuable feature, the most critical factor is that once fitted, the respirator must maintain that tight seal to function correctly. A loose fit or gaps—even if the wearer feels comfortable—would significantly diminish the respirator's protective capabilities, increasing the risk of inhaling hazardous pollutants or pathogens. Comfort is important, but it should not come at the expense of protective effectiveness.