As a singer I use a gargle made of hot water honey vinegar and cayenne pepper. I use cider vinegar usually but you can use others. The cayenne draws mucus to the surface the vneigar breaks it down the honey makes it more pleasant plus is a soother for throats. Gargle and spit. Usually mucus from deep in my throat comes out. Google it for exact recipes but it’s easy and works for singers to clear their throats