COVID Smell Loss Tops Severity as Cognitive Impairment PredictorPersistent loss of smell is a better predictor of long-term cognitive impairment than severity of COVID-19 infection. Medscape Medical Newsadminagosto 1, 2022Uncategorized Persistent loss of smell is a better predictor of long-term cognitive impairment than severity of COVID-19 infection. Medscape Medical News