Answer:
I need to be taken before you can have me. What am I?
The more you have of it the less you see. What is it?
Forward I am heavy backward I am not. What am I?
I am a king who's good at measuring stuff.
I fly away as soon as you set me loose. People around you may slowly move away once they sense my presence.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?