If you let a fart in your sleep, and no one is awake to hear it, does it make a sound?

If you let a fart in your sleep, and no one is awake to hear it, does it make a sound?
The better question would be if there is no one there to smell it does it still make a smell?
very metaphysical.
"if a tree falls in the forest..."
No but I'm sure it will still leave a smell!
Trees in a forest...farts in the bed...what's the difference?

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