N95 respirators are specialized masks designed to filter out at least 95% of airborne particles, including dust, smoke, and viruses. They are commonly used in healthcare settings and during public health emergencies, such as the COVID-19 pandemic. The "N" in N95 indicates that the mask is not resistant to oil, while the "95" signifies its filtration efficiency. These masks are made from multiple layers of synthetic material, which helps trap small particles. Proper fit is essential for N95 masks to be effective, as gaps can allow unfiltered air to enter. Users must ensure a snug seal around the face for optimal protection.