Ключевые слова: air pollution, background, bacteria, care, clean, cloth, cloth mask, cold, concept, cotton, cough, design, dust, environment, fabric, face, fashion, filter, flu, give, hand, handmade, health, health care, healthy, holding, hygiene, mask, medical, mouth, nose, object, people, pm25, prevention, protect, protection, protective, protective mask, safety, sick, smoke, sneeze, space, street, virus, wearing, white,