Ask a trusted person if your breath smells bad
Check for a bad taste or dry mouth
Notice if your tongue looks coated or white
Smell floss after using it between your back teeth
Lick the inside of your wrist, let it dry, then smell it
Cup your hands over your mouth and nose, exhale, and smell your breath
Use a clean spoon to scrape the back of your tongue, then smell it
Pay attention to frequent gum disease, cavities, or mouth sores
Notice if bad breath is worse in the morning or after long periods without eating
See if it improves after brushing, flossing, and cleaning your tongue
Visit a dentist for a professional check if you are unsure