Aside from the formal research, there is clinical support for it: just ask your doctor. Most likely he or she will say, "Sure, go ahead. A lot of my patients do it." That's what mine said.
And finally, I've found on previous social network discussions (including on HN) that the practice is fairly widespread.
https://www.uclahealth.org/news/nasal-irrigation-may-help-wo...
https://www.sciencedaily.com/releases/2022/09/220913110403.h...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7453155/Aside from the formal research, there is clinical support for it: just ask your doctor. Most likely he or she will say, "Sure, go ahead. A lot of my patients do it." That's what mine said.
And finally, I've found on previous social network discussions (including on HN) that the practice is fairly widespread.