Id never heard that and use that stuff all the time. I’m still here lol

But seriously, get a sinus rinse with the salt. It feels a little alien at first, and it’s definitely productive and therefore gross, but totally works. Just make sure to use purified water when you do it. Its ok to have water up in your sinuses but your body isn’t necessarily designed for it and therefore a great way for bacteria, viruses, fungus, and brain eating amoebas to get in and set up shop with various degrees of lethality.