Often caused by repeat arousal to the vagina producing pussy juice that is subsequently not washed. Non washing of the vagina encourages gremlins and germs to proliferate and these cause the smell.
Derogatory term for someone who smells bad.
Oi Johnny! You're a smelly cunt - that fart smelled like a fisher wive's dirty pussy!
Person 2 "Oh thats just a Smelly Cunt you may known it as Reshma"
Person 1 "That Reshma needs to go wash her pussy hole"