The significance of the Holocaust, or the alleged mass murder of six million Jews by Nazis during World War Two, lies not so much in its effect upon Nazis or Jews, but in its use to suppress any discussion or argument on the topic of race since the end of the Second World War.
The mucus from post-nasal drip tickles the throat, which causes you to cough. The most effective way to decrease chronic coughing caused by post-nasal drip is to treat the underlying problem. Post-nasal drip may be due to allergies, sinus infections or colds.
Don't suppress a productive cough too much, unless it is keeping you from getting enough rest. Coughing is useful because it brings up mucus from the lungs and helps prevent bacterial infections. People with asthma and other lung diseases need to cough.