Dear air-head, salmonella does not affect me. I have several times eaten food that put others down hard.
Really, that is the rule, rather than the exception. In all large scale poisonings, it is the small minority that is affected, even though a large batch of food is “toxic.”
In the E-coli hamburger scares, the batches were huge, and the entirety tested positive, yet only a few had serious reactions. The toxin isn’t operative to all.