Answer:
An open ended barrel I am shaped like a hive. I am filled with the flesh and the flesh is alive.
There is one in every corner and two in every room.
You turn me over after you have travelled far.
I look at you you look at me I raise my right you raise your left.
I'm really blue but when you see me I'm red. You don't see me too often. I'm there for you if you're hurt.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?