Actually it is made of the fecal matter(poop)of dust mites. Microscopic anthropods(bugs) that feed on dead skin of any living thing. They live abundantly in fabric and mostly eat dead human skin. Dust can also tiny grains of sand and or microscopic organic matter.
dead skin particles dead skin particles
Dust particles are tiny solid particles found in the air, such as dirt, pollen, and skin cells. They can be natural or man-made and can have harmful effects on health if inhaled in large quantities. Dust particles can contribute to allergies, respiratory issues, and air pollution.
Dust particles are trapped in mucus in the respiratory tract, such as the nose and throat, and in hair on our skin. Mucus acts as a sticky barrier that captures dust particles as we breathe, while hair on our skin can also trap dust before it reaches our respiratory system.
Most residential dust is made of human skin
Dead human skin, mostly.
Most dust particles in your house are made of a combination of dead skin cells, pet dander, pollen, and other small particles like dirt and debris.
The fact that household dust is made up mainly of dead skin cells is a myth. House dust is made up of mainly fabric fibers (from clothes, bed sheets, carpets...), bits of dry stuff like food or cardboard, untreated wood and good old fashioned dirt. There's also a lot of skin of course. This can vary considerably from house to house or room to room.
Those particles are dust. Dust in a household environment is (are you prepared to be grossed out?) mainly flakes of dead skin.
human skin
It stops harmful particles of dust, bacteria etc. from entering into the body
Dust particles in your house are made up of a variety of materials, including dead skin cells, pet dander, pollen, dirt, and fibers from clothing and furniture. It can also contain tiny particles from outdoor pollutants that have made their way inside.
Dust is composed of a variety of particles, including dead skin cells, dirt, pollen, and other small debris.