Answer:
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.
I am a type of cheese made backwards
I transfer oxygen from the atmosphere to your blood
I am a mother from a family of eight. Spins around all day despite my weight. Had a ninth sibling before founding out it's fake.
If I have it I don't share it. If I share it I don't have it. What is it?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?