Reminds me of a long ago story in Analytical Chemistry about a strong taste appearing sporadically in ready-made cake mixes which baffled the flavour chemists.
Apparently some of the test batches had used iodized salt, which ended up creating trace quantities of iodoform during the baking process.
The reason it was so hard to nail down was
a)not all of the batches had used iodized salt
b)not all of the iodized salt created iodoform
c)only about 25% of the population had a particular sensitivity to iodoform.
Oh, the things that make you wonder!
Cheers!
Shouldn't there be some cooks' lore about this issue if so? It's practically universal to use salt in home baking, and the most convenient thing would usually be iodized table salt. I've been at many a potluck with homemade cakes and never heard anybody complain about them tasting weird.