A dust mask is a flexible paper pad held over the nose and mouth by elastic or rubber straps for personal comfort against germs.
Answer:
mask are covering worn over the nose and mouth to avoid the inhalation of airborne allergens
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MASK
A dust mask is a flexible paper pad held over the nose and mouth by elastic or rubber straps for personal comfort against germs.
Answer:
mask are covering worn over the nose and mouth to avoid the inhalation of airborne allergens