Which item must be worn to prevent inhalation of airborne pathogens?

• A. Surgical mask
• B. N95 respirator
• C. Gloves
• D. Gown

Answer: (B)

Preventing inhalation of airborne pathogens relies on a device that both filters small particles and forms a close seal to the face. An N95 respirator is designed to achieve a tight facial seal and filter at least 95% of airborne particles as small as 0.3 microns when properly fitted. This combination of filtration efficiency and fit is what makes it effective for inhalation protection against aerosols.

In contrast, a surgical mask is loose-fitting and mainly helps protect others from the wearer’s respiratory droplets and provides limited barrier against large droplets, not reliable protection from small airborne particles. Gloves and a gown protect skin and clothing, not inhalation. Therefore, the item best suited to prevent inhalation of airborne pathogens is the respirator, with proper fit testing and seal checks.