Ключевые слова: air, apocalypse, atmosphere, background, catastrophe, chemical, chimney, climate, contamination, crisis, damage, danger, dangerous, dirty, disaster, ecology, emission, energy, environment, environmental, face, factory, gas, gas mask, human, industrial, industry, male, man, mask, outdoor, people, person, pipe, plant, pollution, problem, protection, respirator, safety, sky, smog, smoke, smokestack, toxic, urban, vertical, virus, warming,