Smog pollution what is smog and how does it affect our health, and for those unaware of the term “smog”, it is simply put, a combination of the words “smoke” and “fog,” and that is essentially what it is. Smog forms when particles of dust, smoke, industrial emissions, or other pollutants mingle with water droplets in the atmosphere. Because it is heavier than smoke or fog alone, it tends to collect in valleys and hollows.

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