is a mixed air composed of smoke and fog. this will cause the fog looks gray and the air is sticky and uncomfortable. this smog can also affect traffic motorist cause they can't see the road.
Smog is a combination of “smoke” and “fog”. Compared to fog, commonly seen in high areas, smog can be seen anywhere. It is somehow considered as pollution in the air. This is the result of a dark smoke released by vehicles. Aside from that, this can irritate your eyes and even can make you cough.
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