I can't eat nuts, and I get really annoyed by the number of foods that don't actually contain nuts, but claim that they do. Usually they just say "this item is not suitable for nut allergy sufferers," meaning "it doesn't have nuts in, but in the off-chance that our sloppy production processes have caused a nut to sneak in, you can't sue us." In some supermarkets, there are NO items of food that claim to be okay for nut allergy sufferers. Some even put "contains nuts" in big capitals on things that absolutely do not contain nuts, which is a LIE and VERY ANNOYING. /rant

(Fortunately, I'm not allergic in a fatal sort of way, so ignore warnings such as these. I get annoyed in principle, though.)