Answer:
A box without hinges, lock or key, yet golden treasure lies within. Who am I?
It nukes food at the touch of a button.
What do you always smell but never smelled you
What is the only chain we can eat?
It's a symbol and a fruit, For man's folly, evil's root. But also for great inspiration, and famous application.
I lose my head in the morning and regain back it at night.