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Smoke comes from vehicle's silencers , cigarettes etc while smog came from "smoke+fog" the fog vch v sees these days before actual winter is called smog ....smog makes jealous in our eyes while smoke not..!!
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Smoke is the discharge of pollution from carbon burning substances. Smog is the combination of smoke and fog. A smog can cause serious respiratory diseases.
Smog further decreases visibility.
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