Respiratory masks can be termed as protective devices covering a part of the face that are designed to protect the person who wears them and the immediate environment from breathable pollutants. The pollutants may include viruses, bacteria, respiratory poisons, and pathogenic organisms. The breathing resistance of every face mask varies proportionally to the density of the mask material.
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They are considered half-masks since they fit from under the chin to above the nose. They protect both the wearer and the surrounding people from the entry of pathogens via the airway. They are designed to either come with or without valves.
As much as various masks differ in type and droplet filtration rate some general importance includes;
When in search of a protective mask it is recommended to go for a disposable mask that contains 3 layers. Mostly layers 1 and 3 are non-woven fabric while layer 2 is made from a material that acts as a filter. Generally providing a physical barrier to protect both wearers and surrounding people from the transfer of respiratory secretions, fluids, and avoid contamination of carriers in mucus and saliva.
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