The people involved with the intercourse in question are the only ones who don't notice the stink.
Most anybody else within five yards or so will smell it and be physically sick.
Short of amputation, the only way it can be cured is to soak and scrub the area with a strong pine disinfectant.
Willy: Sure did, and it was good.
Chuck: Eeugh! Moby dick, man!
Friend 2: hell yes, I harpooned my moby dick, my life is complete
"That's why I like Andy. He's got a Moby Dick."