This seems a bit unusual!
"A new minimally invasive procedure may restore COVID-related impaired sense of smell ...
Researchers ... performed computed tomography (CT)-guided stellate ganglion block (SGB) in 54 patients who had long-term parosmia (impaired sense of smell that can lead to a distaste for once-like foods and drinks). ...
Previous treatments unsuccessful
The stellate ganglia, part of the autonomic nervous system, are nerves located on the sides of the neck that deliver signals to the head, neck, arms, and parts of the upper chest.
SGB takes less than 10 minutes and doesn't require sedation or intravenous pain management. The procedure has been used with different degrees of success to treat conditions such as cluster headaches, phantom limb pain, Raynaud's and Meniere's syndromes, chest pain, and abnormal heart rhythms. ..."
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