Why do clothes dried in the sun smell sweeter than clothes dried indoors?

 Why do clothes dried in the sun smell sweeter than clothes dried indoors?

When clothes are dried in the sun, a process called photosynthesis breaks down the rancid compounds in the clothes. The most common aid for this is ultraviolet radiation from sunlight. Also, when drying clothes indoors, the humidity is relatively high, so there is a high possibility of fungus growing on the clothes and thus producing soot.

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