This happened a number of years ago. I had a pitch meeting in the early afternoon, but met an old friend for a quick lunch. We stopped in at a small Middle-Eastern place and being brave, I ordered something (I forget what) that I'd never tried before.
Untried restaurant. Untried food.
It was delicious. We finished lunch. My friend went back to his office. I went to my meeting. But as I got to my car, I noticed something odd. I was sweating. Really sweating. Not the, "it's a warm day" - kind of sweat, but buckets were pouring off me.
It must have been something that I ate. I wasn't sick. I wasn't going to throw up. I was just drenched in sweat. And it was getting worse.
By the time I got to the meeting, I was sopping wet. My clothes were soaked and sticking to me. The guy I was meeting with asked if I was okay. I assured him that I was - but all he could do was stare at me. My hair was plastered down over my face...
The pitch didn't go well. I felt fine, but I was dripping puddles on everything. When I got up to leave, there was a wet puddle where I'd been sitting. Needless to say, the show didn't sell. We won't even discuss the squishy handshake at the end of the meeting.
So what do we learn from this? Know when to cancel. If you're sick. If you have a cold, a flu, something that you even think is contagious - do everyone a favor and put it off until next week.
Nobody wants to get sick - and spreading germs isn't the best way to pitch your show.