The most effective method to cure this condition is by treating the liver (and consequently kidney, since it's closely connected to liver). 100% success rate for me and I never get it again since 6 years ago. Had it 2 times in my life and used this method. What's fantastic about it is that it works immediately. (Smell is gone right after doing it, and stay gone for good unlike other methods.)
Liver and Gallbladder Flush
I have discovered a cure for BV. I suffered from it for 4 months after unprotected sex. It wasn't STD. It was not going anywhere until I did what I suggest here.
BV is fundamentally a problem arising from body's pH imbalances. You need to get your vagina ACIDIC to make it healthy and keep the infection away. (Inserting something acidic like Vitamin C powder or vinegar or yogurt is NOT the permanent solution.)
I tried many remedies suggested here on this site for BV which worked temporarily to be symptom-free. But not cured. It came back shortly after stopping the remedy.
KILLING THE BACTERIA WORKS TEMPORARILY, in most cases. Because, Bacteria is NOT the problem - they are everywhere. Healthy state of the body keeps them harmless or we all will perish from infections instantly. You need to know body has to have proper pH balance and different acidity/alkalinity at different locations. When we lose this natural balance, problem happens.
Also, ADDING good bacteria ALSO WORKS TEMPORARILY in most cases of chronic BV. Why? Again, because the cause is still there. pH imbalance.
Ok, so how we restore the natural pH balance FAST?
One very effective way is to do a series of Liver/ Gallbladder Flush, suggested by Dr. Hulda Clark. There are many websites with detailed instructions on how to perform this.
One IMPORTANT THING I MUST ADD is, absolute necessity to do Parasite Cleanse prior to doing Liver Flush. At least 2 weeks of good parasite cleanse is necessary. If you have a "Zapper" (electric device that kills off all parasites), you can put it over the liver area over night. (Move it if it ever starts to tingle or sting, or it can burn your skin. I normally am ok with over night zapping there without any problem). Also, you can take parasite cleanse herbs like Paratrex sold on the internet. If you don't do this, you won't get nearly as good results when you do the liver flush. Microscopic parasites live inside your liver and everywhere in your body. And they secrete sticky thing that make them stick inside of liver and gallbladder. They will prevent things getting cleansed and flushed out of your liver. After parasite cleanse, when you do the liver flush, you will definitely see stuff (stones and waste materials) coming out of your liver/ gallbladder. Sounds nasty, yes, but you want that out of your body. Then your liver will start to perform more optimally. It detoxifies waste, which is ACID in nature, and the body just KNOWS how to do its job properly - balancing itself out! (My theory for this).
Please try the Parasite Cleanse and Liver Flush to cure BV for good.