Answer:
Always in you, sometimes on you. If I surround you, I can kill you. What am I?
I spend the day at the window go to the table for meals and hide at night.
When you stop and look, you can always see me. If you try to touch, you cannot feel me. I cannot move, but as you near me, I will move away from you. What am I?
Everyone has me, but nobody can lose me. What am I?
Late afternoons I often bathe. I'll soak in water piping hot. My essence goes through. My see through clothes. Used up am I - I've gone to pot.
What goes up the hill and down the hill, And spite of all, yet stand still?