There isn't a specific juice that "kills" bad breath. However, some juices can help freshen your breath by stimulating saliva production and neutralizing acids in your mouth. Citrus juices, like orange, lemon, lime, and grapefruit, are often mentioned as effective breath fresheners. This is because the citric acid in these juices helps increase saliva flow, which washes away food particles and bacteria that cause bad breath.
While these juices may provide temporary relief, it's important to note that addressing the underlying cause of bad breath is crucial for lasting results. If you're experiencing persistent bad breath, it's recommended to consult with a dentist or doctor to rule out any underlying medical conditions.
