Answer:
Everyone asks for me but yet everyone hates to face me. For someone I am agony for others I am relief. Who am I?
Always in you, sometimes on you. If I surround you, I can kill you. What am I?
By Moon or by Sun, I shall be found. Yet, if there's no light around, I am undone. What am I?
What is seen in the middle of March and April that cannot be seen at the beginning or end of either month?
I am the kind of soda you must not drink.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.