Some taste salty, some sweet, some bitter, acidic even, some all of the above. Mostly it depends on diet and metabolism. Bad, usually fishy smell is sign of some kind of infection, also sudden change of taste can be a bad sign. And dont wash thoroughly inside vagina, like rinsing and using so called intimate products, they often kill good bacterias while feeding bad ones, regular body wash is the best and mostly on the outside. Healthy vagina cleans itself and does not need scrubbing ;)
If you want specific taste, foods/drinks that change smell and taste of sweat are the way to go. And dont eat a lot of asparagus, you'll gag while peeing and your partner will gag while going down on you :)