Answer:
I have a few points but we're not competing. I'll help you win when you're eating.
I am the type of room you cannot enter or leave. Raise from the ground below I could be poisonous or a delicious treat.
I shrink smaller every time I take a bath.
An action done on mosquito bites
When you take away the whole from me there is always some left.
It weighs next to nothing but no one can hold it for long. What is it?