Respiratory face masks fits tightly around your nose and mouth) , commonly know as N95/FFP2/KN95 face masks can protect against the corona virus if you wear and use them correctly.
Filtering facepiece respirators (FFR), which are sometimes called disposable respirators, are subject to various regulatory standards around the world.
These standards specify certain required physical properties and performance characteristics in order for respirators to claim compliance with the
particular standard. During pandemic or emergency situations, health authorities often reference these standards when making respirator
recommendations, stating, for example, that certain populations should use an “N95, FFP2, or equivalent”respirator.