| fouling(contamination, effluence) | |
| foulness(contamination, effluence) | |
| fragrance | |
| fuzziness(obscurity, fogginess, mistiness, haziness, blurriness) | |
| grease(mist, vapor) | |
| greenhouse effect(expression, contamination, effluence) | |
| hazy pollution | |
| impairment(contamination, effluence) | |
| impurity(contamination, effluence) | |
| indistinctness(obscurity, mist, fogginess, mistiness, fog) | |
| infection(contamination, effluence) | |
| integument(obscurity, fogginess, mistiness) | |
| layer(obscurity, fogginess, mistiness) | |
| leaf(obscurity, fogginess, mistiness) | |
| maze(mist, vapor) | |
| membrane(obscurity, fogginess, mistiness) | |
| mental unclarity(expression, mist, vapor) | |
| mistiness(obscurity, fogginess, haziness, fuzziness, blurriness) | |
| misuse(contamination, effluence) | |
| muddledness(mist, vapor) |
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| APA | Smart Define. (2015). smog thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/smog/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "smog thesaurus" https://smartdefine.org/smog/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, smog thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/smog/thesaurus/synonyms>. |
| MLA | Smart Define. "smog thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/smog/thesaurus/synonyms> |