1) Spit them out and throw them away. The same thing any person would do if they clipped them instead.
So do you swallow the tiny nails you bite, or do you spit em out where innocent people walk around thinking it's safe
Don't your nails' remains and fingertips get really damp and weak due to saliva digesting them all the time
I'll return with more questions
2) No, I've not noticed anything about my finger nails or tips being weak or damp.