You shouldn't douche with any kind of product, because it destroys your natural bacteria. A healthy vagina is actually the cleanest part of your body. If you wanna us water to remove blood or semen that is fine. It actually can be necessary as those can alter the pH levels and heighten the risk of yeast infections. As for a bad smell or taste those are casued most of the time by a lack of good bacteria, becasue people douched and stuff. If that is the case there are pills you can take or goat milk soap you can use to get them back.