comments:
Gargling and Saline nasal irrigation have shown efficacy in multiple studies in reducing respiratory infections. This Systematic Review looked at reduction SARS-CoV-2 nasopharyngeal viral load (NVL) and transmissibility. https://pubmed.ncbi.nlm.nih.gov/39268910/ The References have many studies with different protocols. Saline solutions are often done to personal tolerance between 1.5 to 3%. #23 says baking soda at a concentration of 5% was effective. NeilMed makes a convenient package https://www.walmart.com/ip/NeilMed-Sinus-Rinse-Kit-1-Count/10324362 The important thing is to use distilled or freshly boiled water. Don’t reuse water boiled on previous days. Bacteria multiply quickly and invisibly. If saving to use the same day, sterilize the container and cover. The microwave is easiest, most effective to assure sterility of containers.