I keep going into a nice baker, which has sourdough breads, with a big sign saying they're "yeast free". They're not bloody well yeast free, they just don't have added yeast.
I'm also unduly annoyed by things that are chemical-free, when that expression just doesn't make any sense ...
Make me feel like less of a freak! Share your pedanty annoyances. (No greengrocer's apostrophe stories, please ...)