It depends. The love of my life's pussy smelled incredible. It didn't hurt that she shaved all of her pubic hair for me
But lapping up that thing was a treat. The sad thing is, it's been just over a couple of years since I was with her, so I don't remember the smell well enough to describe it
Most of my other significant others' twats smell like fish. Going down on them was/is like jamming my head into a big bucket of sun-cured chum. No thanks.