N95 masks are particularly useful in which of the following situations?

N95 masks are particularly useful in which of the following situations?

• A. Finger printing
• B. Calls where the homeowner is a hoarder
• C. Sick people
• D. Cleaning a spill

Answer: (C)

N95 masks are designed to protect the wearer from airborne infectious particles by filtering out small aerosols when fitted correctly. They seal to the face to reduce leakage, blocking a large fraction of respiratory droplets that can carry viruses or bacteria. That makes them particularly useful when you're around sick people, because you're directly aiming to prevent inhalation of pathogens. The other scenarios involve tasks not specifically about airborne infection control — fingerprinting is routine and low risk; dealing with a hoarder home raises dust or mold concerns but doesn’t revolve around airborne pathogens; cleaning a spill may involve splash or chemical hazards and uses other PPE like gloves and goggles. So being around someone who is ill is where the mask’s protective purpose is most directly applied.

N95 masks are designed to protect the wearer from airborne infectious particles by filtering out small aerosols when fitted correctly. They seal to the face to reduce leakage, blocking a large fraction of respiratory droplets that can carry viruses or bacteria. That makes them particularly useful when you're around sick people, because you're directly aiming to prevent inhalation of pathogens. The other scenarios involve tasks not specifically about airborne infection control — fingerprinting is routine and low risk; dealing with a hoarder home raises dust or mold concerns but doesn’t revolve around airborne pathogens; cleaning a spill may involve splash or chemical hazards and uses other PPE like gloves and goggles. So being around someone who is ill is where the mask’s protective purpose is most directly applied.