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Dust includes miscroscopic particles from the air that settles on objects or areas inside or outside.

Outside, it can contain particles of earth, pulverized stone that turned to dust, remnants of garbage or debris, broken down particles from leaves and plants, plant pollens, and chemicals used on lawns or industries. Interestingly, "dust" from volcanic eruption can be carried around the world and affect people in other countries.

Inside, dust can contain air particles, lint from clothing, dead skin cells, dandruff from people, dander from pets and their dead skin cells, fur and human hair, and anything brought in from the outside.

Dust mites are also in dust, where dust mites feed on people and pet's dead skin cells.

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15y ago

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