I am a professional and have to deal with governmental meetings. I need a way to suppress a cronic cough at least while in meetings. I am 57 yrs old and have always had problems with sinus infections, asthma, and pnemonia. I have been battling this cough for 4 mths which has been treated with 4 different antobiotics. I believe my cough is due to extreme sinus drainage. The mucus I cough up literally gages me to the point of vomiting. And then the vomit is the same mucus crap. How can I suppress this long enough to get through a day of meetings?