Ключевые слова: air, asia, asian, background, bangkok, blackground, breathe, building, business man, carbon dioxide, care, city, coronavirus, covid19, dirty, disease, dust, environment, face, flu, focus, foul, health, hygienic mask, influenza, man, mask, mist, n95, n95 mask, people, person, pm25, pollution, prevention, protection, respiratory, show, sick, thailand, toxic smoke, traffic, virus, wearing, white,