Sinonasal Microbiota Transplants (SNMT),
I read some articles about this. Do a search for "snot transplants". The idea is to put nasal flora from a person without sinus problems into your poor suffering nose, so that the healthy bacteria can compete with the "weeds". Not being one to wait for years of double-blind studies for official permission to say, drink a glass of water when I'm thirsty, nor to pay a professional to do something simple I can try myself, I went for the free and easily available option. To wit, I handed my wife a cotton swab, she swabbed a barely visible amount of clear mucus from her nostrils, which I then applied in my nostrils.
The morning after the second application I could actually taste the tomato sauce on our home made pizza! And I was briefly able to sniff, after at least 3 weeks of 100% blockage on both sides. This is the 4th day. I've been able to sniff a couple of times each day, The very fat swollen nose looks almost totally normal, the sinus headache is gone, the eyes are not watering non-stop, my nose is not streaming, I used no tissues in the night, and my snot has gone from deep yellow and even green and clumpy (sorry!) to white to pale yellowish. I'll continue and see how it goes, but at least I'm hopeful instead of miserable. If you have a loved one or good friend, you could do the same. Do a search first for Sinonasal Microbiota Transplants, if you wish. Health and the best of luck to you all!