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> 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.)

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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.

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