[Wacka]

They do.
E, coli is on everything. It's just the bad strains (to humans) that cause disease. E.coli live in your gut. A percentage of your feces is bacteria.

If you have potatoes at Thanksgiving, you are ingesting some arsenic. They naturally have a little arsenic in them.

[BrandtMichaels]

Yes, but it is not an ingedient to be sought after in a recipe. By the same token you are not a FR poster I care to discuss/debate as you are always splitting hairs but somehow never quite seeing the forest for the trees.