Chocolate makes some cough it seemsIn 1968, living then in Christchurch, and two years into a 50 year programming career, I went alone to a performance of Claudio Arrau, then a world-famous Chilean pianist. I remember him, more than 50 years later, as a slight, small man, of dark moustache and hair, looking perhaps older than he was. Early in the first half I ate a piece of chocolate and shortly began uncontrollable coughing so that I had to leave the concert hall in a hurry.
The remainder of the concert (on my return) was flawed, many mistakes and I wondered whether he had my cough too!
That was perhaps the first time I noted the coughing-chocolate connection, confirmed subsequently on many occasions. If I go to a play or concert, chocolate is forbidden! Online search shows many have this reaction, and there are various explanations.