Yup. They're manufactured by Hershey's in the US, and Hershey's is notorious for using butyric acid in the production of its chocolate, which, yeah, is one of the compounds found in puke. If you grow up eating Hershey's chocolate you don't really notice it though.

No, not really. We do have a handful of smaller local candymakers that try to make their own versions of chocolate wafers that are way better, though. But they're very rare.