Masks are crucial protective equipment used in laboratories and hospitals to prevent the spread of infectious diseases and contaminants. These masks, such as surgical masks or respirators like N95s, create a physical barrier that blocks respiratory droplets and airborne particles, reducing the risk of inhaling or exhaling harmful substances. Surgical masks are commonly used by healthcare workers during procedures to protect patients from potential infection. Respirators like N95 masks are designed to filter out fine particles, providing enhanced protection against airborne pathogens. The choice of mask depends on the level of protection required and the specific tasks being performed. Proper and consistent use of masks is essential in healthcare settings to maintain a safe and healthy environment for patients and staff alike.