Face Mask with a respirator is a respiratory protective device designed to achieve a very close facial fit and very efficient filtration of airborne particles. Note that the edges of the respirator are designed to form a seal around the nose and mouth. Surgical Face Mask Respirators are commonly used in healthcare settings and are a subset of KN95 Filtering Facepiece Respirators (FFRs), often referred to as KN95.
Face masks vary by quality and levels of protection as it retains some of the respiratory droplets released from the wearer through talking, coughing, or sneezing. Thus, they reduce the spread of infectious agents.