I am so glad to read this! I was really thinking I had a problem...
not wanting to eat from to bake sales, cookie swaps... potlucks, even. But I have to remember, I love cookie dough, cake batter, all that stuff, and I am still here, and (knock on wood) have few, if any food-borne problems.
In Guatemala, though, I ate tamales that were passed along a "food chain" during a ceremony to celebrate an electrification in a village. Never have I been so sick -- amoebas. Horrible. Another journalist got it too. We took turns in the bathroom and at the computer trying to finish up the story.