My experience with the groin of the woman has varied wildly. Some were almost nuetral...one was sweet and wonderful...one smelled like laundry detergent. Luckily, I've not encountered fishiness yet. I have encountered excessive saltiness...which was unpleasant.
As for male groin, all I can relate to is my own. And I'm very self conscious about odor, so I stay very clean. Taste? I dunno. If i could taste it, I wouldn't be on here posting...lol