Answer:
Always in you, sometimes on you. If I surround you, I can kill you. What am I?
I shift around though always slowly. I never move more than a few inches at a time. A large movement by me can kill many people. I am huge yet unseen by humans.
2 in a corner 1 in a room 0 in a house but 1 in a shelter.
I'm a word that's hardly there. Take away my start and I'm an herbal flair. What am I?
A move made popular by the King of Pop.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.