What Causes A Sensitive Throat With Bubbly Phlegm?

I am 44 years old, and have a long history of asthma and chronic bronchitis. Lately I am developing a very sensitive throat and have tons of tiny bubbles when I cough up mucus. Lately hot flashes/head rushes are accompanying the cough. I used to smoke a variety of substances, but gave it up for the most part for dipping tobacco. I went through a horrible lung fungus but God healed me miraculously a few years ago. There are no signs of the fungus, but the bubbly phlegm seems to keep my throat coated and irritated/sensitive. I have lost all but 6 teeth due to severe periodontitis over the last 25 years. Guafenisin doesn t seem to loosen it, and dextromethorphan helps very little. I use albuterol, but it doesn t help the cough, just the asthma.