alt Hacker News> although probably not more effective than a saline solution
I guess saline is a baseline against which effectiveness should be measured here, especially since nasal sprays are usually saline plus something. (I guess? Not sure about Sudafed specifically.)
I'd argue that saline should be the panacea here. I doubt very many people do at-home saline rinses with filtered, sterilized water and a simple mixture of salt and baking soda.
Do people really want to spray PFAS water directly into their mucus lining?
I bought an Arm and Hammer Saline spray out of curiosity. It smelled awful, and the BPS lined can had an awful smell despite the ingredients being: water, salt, baking soda, and no suspicious preservatives.