Studies have established a connection between vocal cord mobility and COVID infection. "Laryngeal nerve palsies may represent part of the neurologic spectrum of COVID-19. When voice changes occur in patients during COVID 19 infection, the possibility of vocal cord paralysis due to peripheral nerve damage caused by the SARS-CoV-2 should be considered," says a study.
An injury to the vagus nerve which controls voice, swallowing, breathing and coughing is a possibility during COVID. "If the vagus has been towel-snapped by a virus, it's going to not function normally, and one of the manifestations is shortness of breath with or without cough," Dr. Jonathan Aviv, an ear, nose and throat specialist at Mount Sinai Hospital in New York City told a health journal.