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One possible cause could be our sinuses, says Dr. David Gudis, chief of the division of rhinology and anterior skull base surgery at New York-Presbyterian/Columbia University Irving Medical Center.

"Chronic sinusitis affects as much of 10 percent of the United States population, and can make breathing uncomfortable and negatively impact a person's daily life," said lead author James N. Palmer, MD, the David W. Kennedy, MD Endowed Professor of Otorhinolaryngology and director of Rhinology at Penn Medicine.

Prof Carl Philpott, of Rhinology & Olfactology at UEA's medical school, said he hoped the conference - starting on Thursday - would increase knowledge and skills among medical professionals.

And it doesn’t matter too much which brand of neti pot you buy, says Anthony Del Signore, the director of rhinology and endoscopic skull base surgery at Mount Sinai Beth Israel in New York.

“Each COVID-19 strain has different symptoms. The Omicron variant, more than the others, seems to have more of the upper respiratory tract symptoms like nasal congestion, runny nose and sore throat,” says otolaryngologist Ahmad Sedaghat, director of the Division of Rhinology, Allergy and Anterior Skull Base Surgery at the University of Cincinnati College of Medicine.