Final answer:
When wool is burned, it smells like burning hair.
Step-by-step explanation:
When wool is burned, it has a distinct smell similar to burning hair. This smell occurs due to the keratin protein present in both wool and hair. The burning of keratin releases various compounds, including ammonia, which contributes to the odor.
Unlike tar or vinegar, which have their own distinct smells when burned, wool burning closely resembles the smell of burning hair. Diesel fuel, on the other hand, has a very different smell and is not associated with burning wool.
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