Answer:
The more you have me, the less you see. Shine a light on me and I flee. What am I?
I go in hard come out soft. Blow me hard and I’ll make a pop.
My first is in fish but no in snail. My second is in rabbit but not in tail. My third is in up but not in down. My fourth is in tiara but not in crown. My fifth is in tree you plainly see. My whole a food for you and me.
There is one in every corner and two in every room.
I am a kind of coat that can only be put on when wet.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.