I can sound like someone with the answer,
If you figure me out, your answer could be on me,
Why not dive in and give it a blow?
What am I?
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a nose !
I can sound like someone with the answer
Nose sounds like knows.
If you figure me out, your answer could be on me
To hit something on the nose is to be right/accurate, which is what this answer is.
Why not dive in and give it a blow?
I'm nose diving into solving this riddle; you blow your nose when you have a cold.
And about the title:
A nose has two nostrils.