Hopefully, everyone with mucous issues have had several Nasal-Endoscopy tests performed. I say several, because it took three different ENTs to finally find the cause of my problem. All three ENTs did the exact same Nasal-Endoscopy, yet it took a University ENT to find the cancer near my vocal cords, and later finding my vocal cords to be paralyzed. During radiation treatments I contracted Covid, breaking ribs with four months of forceful coughing. After the radiation treatment, it was becoming more difficult to breath because of thick mucus stuck in my throat. Then, Covid struck again, and right after the second "vaccination." After that second bout, no amount of nebulizing would alleviate the thick, stuck mucus. Literally, at deaths door, this wonderful ENT found the vocal cords to be paralyzed and suggested a Tracheotomy...I know...who wants a horrible Tracheotomy? I sure didn't, but you know what? It is the best thing that has happened to me throughout this ordeal. All the gunk can be easily coughed right out that hole in my neck or suctioned if needed. Imagine a clogged sink drain where the clog is out of reach. Now imagine that drain with a hole drilled where the clog accumulates. Most days, I forget the tracheotomy is even there, really. All this to say, please find out the condition of your vocal cords. They are the door that open and close allowing mucus through. Radiation, Covid, or a combination of the two can wreak havoc on these mechanisms. A Swallow Study is a fabulous procedure too. It will show you eating and drinking on a screen. This is done through an X-ray type machine. Best wishes to all the mucus sufferers.