I hope it's contagious.
For me, it's the annoyance of needing to eat every 1.5/2 hours OR ELSE . . . my stomach grumbles, LOUDLY, and the nausea hits me like a ton of bricks. Wait too long and it's dry-heave central. Then I eat something bland and quick, and try to distract myself so I can keep it down long enough to digest some of it. This is what I get for not feeling enough sympathy for my clients, I think.