Hmmmm. I cut up apples with carbon steel knives all the time. And one of our most-used kitchen knives is an old carbon steel Dexter boning knife. The Dexter gets washed with soap and a sponge in the sink after use, of course, but my pocketknives usually get nothing more than a rub-down with a napkin, t-shirt, jeans or whatever else is handy (sometimes with a little saliva for good measure). 39 years and counting, and I ain't dead yet.
I mean you got to clean it if you're butchering things with it. Cut up beasties, & don't not clean it & you'd be eating all sorts of other little beasties.
