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Dust masks, personal protective devices used to prevent or reduce dust in the air from entering the respiratory organs of the body. Their purpose is to protect life safety by preventing or reducing dust in the air from reaching the respiratory organs.

Precautions:

1. The outer layer of dust masks often accumulates many contaminants such as dust and bacteria from the outside air, while the inner layer blocks out bacteria from exhaled breath and saliva. Therefore, the two sides of a dust mask should not be used alternately; otherwise, the contaminants on the outer layer will be inhaled when directly pressed against the face, becoming a source of infection.

2. When not wearing the mask, it should be folded neatly and placed in a clean envelope. The side that touches the mouth and nose should be folded inward. Avoid putting it in your pocket or hanging it around your neck.

3. If a dust mask gets wet by the warm breath or saliva, its ability to prevent germs will significantly decrease. Therefore, it is best to keep several masks on hand for replacement, and they should be washed daily. When washing, soak them in boiling water for 5 minutes.

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