Answer:
I am always around you but often forgotten. I am pure and clean most time but occasionally rotten.
What can you catch but not throw?
What is so delicate that saying its name breaks it?
Fatherless and motherless. I was born without sin. Roared when I came into the world, but I never spoke again. What am I?
Of the king I am blue and of the peasant I am red. Of the frog I am cold and of the dog I am hot instead. What am I?
When is it bad luck to see a black cat?