if i worked in a restaurant, or a mice breeding facility, i doubt i would have such issues with this term. but the fact that i work in a totally-unrelated-to-nibbling industry leads me to feel seriously creeped out whenever a client, or boss, or coworker inquires if there have been "any nibbles". yes, i know, they mean leads or interest....but then say those words! nibble is not a word that lends itself to the workplace.
ugh. it makes my skin crawl.