Is dark matter something that leaks out of black holes?

We don't know what exactly happens to matter that gets sucked into black holes, is it possible that due to the changed nature of the matter that falls into black holes, somehow they get transformed into non-baryonic matter, which could explain why they don't interact with baryonic matter after somehow "leaking out of" black holes, but at the same time retaining their gravitational effects upon their surroundings, including remaining invisible due to light not being able to escape it?

I heard there are no stupid questions so here you guys go.