Ключевые слова: adult, apartment, background, building, business, caucasian, coronavirus, covid, distance, door, down, elevator, face, female, floor, group, health, high, home, hotel, house, illness, indoors, industrial, infection, level, lift, male, man, masks, measure, metal, microbes, modern, office, pandemic, people, protect, protective, public, ride, steel, technology, transport, up, urban, using, virus, woman, young,