DUST IS VERY FINE (no more than one tenth of a millimeter) particles of skin, hair, pet hair, pellets from clothes, as well as pollen, grains of sand or fungal spores. Dust can be harmless, or it can seriously ruin your well-being. How
Allergy to cleanliness: How to properly deal with dust so as not to get sick
DUST IS VERY FINE (no more than one tenth of a millimeter) particles of skin, hair, pet hair, pellets from clothes, as well as pollen, grains of sand or fungal spores. Dust can be harmless, or it can seriously ruin your well-being. How