UPDATE 6/18/25 : The stellate ganglion block does NOT work to treat COVID related smell and taste loss based on a randomized, double-blinded, placebo-controlled clinical trial that was published in June 2025. Original blog article still published below, but is no longer considered accurate! ORIGINAL Article : There has been a smattering of anecdotal research (with slightly more media coverage) that even a single stellate ganglion block (SGB) may resolve long COVID symptoms afflicting the cent…