I have no problem with coughing when performing, infact i often answer my mobile phone during performance. in my last concert performance of Lizts bminor sonata i stoped in the middle went out and yoused the toilet, then started from where i leftof.
Would anyone cough when they're performing? If one really feel like coughing, what would he do?
I was at a Walter Hautzig recital once. Before he started he said, "I seem to have a little cold that is causing me to cough, but don't worry I will try to cough in Eb maj." the audience loved it. great stuff.
i often answer my mobile phone during performance.