used as an expression to describe smell

or also used as an expression when you are let down like "dang"

Providing a boop to another being's nose or snout (stylized as snoot), preferably in a gentle or affectionate manner. Often, this is something one feels the need to do to cute animals. When animals boop each other's snoots, the general attitude of the boop must be taken on a case-by-case basis.

When someone or something's nose is just too adorable that you have no choice but to touch it with your finger or "boop" it

when a planes snoot goes droop

The snoot would droop

When the adorable snout (or snoot) of a snek is booped

A gentle poke or tap on the nose.