From the Journals

COVID Tied to Hidden Smell Deficits

COVID-19 may leave behind unrecognized olfactory deficits linked to cognitive complaints.

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  • 1

    Study shows 2/3 of COVID-19 survivors experience hyposmia.

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    80% of participants reporting smell/taste changes had abnormal UPSIT scores.

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    23% met criteria for severe microsmia or anosmia.

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    Cognitive symptoms reported by 66% of those with smell loss.

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    Younger women performed below historical norms in smell testing.

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    Formal olfactory testing may be beneficial for post-COVID care.

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    Cognitive complaints mostly assessed via Neuro-QoL testing.

Original Source(s)

COVID Tied to Hidden Smell Deficits

COVID-19 may leave behind unrecognized olfactory deficits linked to cognitive complaints.

  • by Lauren Velentzas

  • September 30, 2025

  • 2 min

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