Oh my goodness, well I would definitely NOT sneeze right into the whistle. ![surprised surprised](https://pennywhistleclub.com/data/media/0/0/jrSmiley_79_smiley_image.gif)
If i was playing with others, they would keep going while I take two seconds to sneeze, for sure. I'm sure the audience will understand in any case, even if you have to stop for a moment.