Ключевые слова: air, apocalypse, apocalyptic, atmosphere, biochemical, breathe, chemical, child, climate, concept, damage, danger, dirty, disaster, disease, ecological, ecology, emission, environment, environmental, epidemic, exhaust, factory, future, gas, generation, health, industrial, industry, kid, manufacture, mask, nature, person, planet, plant, pollute, polluted, pollution, problem, production, protection, protective, respirator, safety, smog, smoke, steam, toxic, urban,