I'm sorry to hear about your food poisoning! (to everyone here who had it, too!)
I think it's awful that a MSC/client would bar people due to food poisoning. I also think it's awful that a person may have no recourse if they are food poisoned. It's scary to me, because I did get food poisoning long ago BEFORE I was a mystery shopper, at a pizza place. I vomited so violently that I tore a hole in my stomach. Had to be hospitalized for nutrition and pain management for nearly a week. After hospitalization, could only eat soft stuff, like pudding, yogurt, pancakes, etc for 2 weeks! It was really an ordeal!
That said, I would HATE to have that type of hospital bill and experience from a shop and get no recourse as a result.
And, to take it a step further, it makes you wonder how MSC's would handle certain other "dangerous" situations. Sometimes I feel like we shoppers are "just a number," so to speak. Or worse, by how SOME schedulers and editors treat us from time to time. There was a gas station shop years ago that I would not pick up. I picked up the locations in other parts of town, but not this one particular one. Scheduler would try to offer more money, cajole me, etc. I told her I would not do it because there had been a shooting there recently and it was a REALLY bad part of town. She apologized. She did not know my town and did not know this shop was in a dangerous area, of course. She reported it to her supervisor and the shop disappeared from the job board soon after.