Answer:
I am always around you but often forgotten. I am pure and clean most time but occasionally rotten.
What is full of holes but still holds water?
If a plane crashes on the border of US and Canada where do they bury the survivors?
When you take away the whole from me there is always some left.
Good memory, skin like the sea. A great beast I am, yet vermin frightens me. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?