Dreams dictionary: Snot
Dreams dictionary: Interpretation 1
To dream that you are picking snot out of your nose indicates that you are ready to confront some subconscious material.
Dreams dictionary: Interpretation 2
To dream that your nose is full of snot implies that you are being stuffy, unyielding and rigid. If you try, but cannot get the snot out of your nose, then it means that you are unable to be your true self. Something or someone is restricting you from fully expressing yourself.