Answer:
If you're looking for something sweet I know what to do. But if you don't like heat I'm not for you.
I can be swallowed, but I can also swallow you. What am I?
I cannot be burned in fire or drowned in water. What am I?
I run up and down the stairs without moving
I am expelled from you orally with a sound
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.