Ключевые слова: adult, air, allergy, asia, asian, background, boy, carbon, care, child, childhood, city, cold, cute, danger, dioxide, disease, dust, environment, face, fumes, health, healthy, infection, kid, little, mask, medical, mouth, nose, outdoor, people, person, pm, pneumonia, pollution, portrait, prevention, protect, protection, smog, spread, street, thailand, toxic, virus, wearing, white, woman, young,