A doctor for NASA sent me a product. He said when they send astronauts into space they can't have them get sick. He said the germs that make people sick first incubate in the back of the throat where the nose and ears meet, where you can't reach gargling. His product was a small tincture, the instructions were to put drops in your nose so it will reach the place in the back of the throat. That was the best product. It cleared that space of mucus instantly. It wasn't for sale after I ran out I couldn't get any more.
After I started turpentine, I tried it in my nose. Now I know what the secret ingredient was that the product the NASA Dr used: turpentine, not even diluted. It works great.