Using human safe Iodine solution as a mouth wash and gargle may help. Also food grade hydrogen peroxide - a few drops on your tooth brush or diluted and as a mouth wash. You may have bacteria, usually a Clostridia, in hidden infections in your mouth or living in decayed areas in your teeth. An alternative dentist can help you clear up these problems. I use 30 drops in about 4 oz water decolorized with a pinch of Vit. C. I hold it in my mouth swishing it thru the teeth then swallow it to help clear out the bacteria in my throat. I also use a Water Pic to get out all food stuck in my teeth. Taking Clark's Iodine drops - 10 drops or stronger in water - after meals or whenever you notice a problem. Follow the directions as people with low Iodine levels sometimes have a reaction.