Genuine question. I once had a medical doctor who swore by saline nose/throat gargling for upper respiratory tract illnesses—he was a by the book, orthodox, evidence-based doc. I did not research it. Anyone know the evidentiary status of his claim? I did not see a recent review.
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This maybe a potential mechanism (I previously had a research interest in NO measurement so thought there might be something on this topic) https://bit.ly/3eAJlQm
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