This recently happened to me when I was in the audience of a theater and started to cough, and then cough some more, and then I couldn't get my coughing to stop. I was searching for cough drops as well as see how to climb over 10 people to get to the aisle and invisibly crawl out with no one noticing. I then thought, HEY! There is an acupuncture point for coughing!! So I started to massage that point and almost immediately my coughing became suppressed. It was pretty cool!
The acupuncture point to help with coughing is known as Lung 5, or LU5. It is located in the elbow crease of either arm. It is in the depression area of the elbow crease and slightly lateral to the biceps tendon. It can be tender if you have a cold. This acupuncture point is one of the points used to help with coughing, sore throat, and even asthma.
I was rather amazed how quickly my coughing stopped while I massaged that point in one of my arms. It almost seemed like magic it was so quickly effective.