SARS-CoV-2 infection frequently causes temporary loss of smell and taste, driven by viral entry and subsequent damage to sustentacular cells in the olfactory epithelium.
Multiple high-quality experimental and histological studies consistently show that SARS-CoV-2 infects and damages sustentacular cells in the olfactory epithelium while sparing olfactory sensory neurons, explaining the frequently observed temporary anosmia and ageusia.