Sorry to hear about your accident. I have to ask, why would you take your BPs out to feed? It is preferable to feed all snakes in their normal enclosures,
and handling a snake that is hungry & expecting food is asking for a bite. Our hands are "warm & wiggling" (like prey!), they are expecting food (& easily
jump to a conclusion when hungry!) and IF you have the faintest whiff of rat-scent in the room OR on your hands, that pretty much completes the picture
in their mind. I don't think it's personal, they don't want to bite YOU, but they are confused. You should feed them only in their normal cage & using tongs
to offer the prey. It doesn't help that you haven't been handling them so much- it makes their mistakes more likely.
Do you know about "hook training" your snakes? It has nothing to do with picking them up using a snake hook. It's actually a method using a snake hook
to signal to the snake that it's NOT food coming their way, only that it's time to be handled. With minimal effort, most snakes catch on & don't bite...it's one
of several ways of communicating what's heading their way. Personally I use my scent, & sometimes touch as well...remember that snakes best senses are
their sense of smell & touch. They do not recognize us visually...they use vision to see motion that they assume means prey to chase. And obviously they
cannot hear us either. If you take a moment to signal to them that you are not food (by using their best senses, touch & scent), it should greatly reduce
their mistakes in biting you.