Ключевые слова: air pollution, air quality, background, breathe, clean, cleaner, comfort, detector, disasters, dust, environment, fire, forest, good, happy, harmful, health, home, house, indoor, industry, interior, invisible, lifestyle, living, living room, man made, measuring, meter, monitoring, particle, particulate, particulate matter, pm 25, pm25, poisonous, pollution, problem, purification, quality, respiratory, room, sensor, small, smog, space, table, toxic, virus, welfare,