Another person has an altered perception of smell, which consists of an unpleasant odor. What condition does this person likely have?

Parosmia is a distorted perception of an odor, often making familiar smells seem unpleasant. Hyposmia means a reduced sense of smell, and anosmia means a loss of smell; dysosmia is a broader term for abnormal smell perception. The condition described is parosmia.

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