Answer:
I go in hard come out soft. Blow me hard and I’ll make a pop.
I am always around you but often forgotten. I am pure and clean most time but occasionally rotten.
I am carried by mad animals.
I repeat only the last word you say. The more I repeat, the softer I got. I cannot be seen but can be heard. What am I?
I am made by nature soft as silk; A puffy cloud white as milk; Snow tops this tropical crop; The dirtiest part of a mop.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.