Ключевые слова: air, allergy, appliance, asthma, axial, background, bathroom, blade, blow, building, circle, conditioning, cooling, dingy, dirt, dirty, domestic, duct, dust, electric, electrical, electronic, equipment, exhaust, fan, filter, grid, health, home, industrial, infection, isolated, kitchen, nobody, plastic, pollution, power, propeller, round, technology, turbine, unclean, unhealthy, vent, ventilating, ventilation, ventilator, white,