A fog or mist-like substance created by biological organisms, such as bacteria or algae, typically in controlled scientific or industrial settings.
From bio- (life) + fog (from Old English, meaning mist or water vapor). This is a modern technical term combining established weather terminology with biological prefix.
Biofog appears in some experimental bioremediation projects where scientists use airborne microorganisms to help clean polluted air—biology literally fighting fog with living things!
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