Consume yoghurt: Yoghurt contains Lactobacillus, which is a helpful bacteria. Make sure your yoghurt is low in sugar, such as non-fat or plain yoghurt, as this can help to reduce bad breath. Sugar can naturally feed bacteria, which is a significant contributor to bad breath, so avoid sugary yoghurt; instead, go for probiotics. However, you should consult a doctor if you continue to think your breath smells awful and doesn't get better despite attempting the above-mentioned remedies.