Many years ago, soon after I’d started working in radio, I arrived at the newsroom to be given my assignment for the day. I was asked to visit a clinic treating bad breath where I was to get my own breath tested and interview the doctor.
There are potential causes outside of the mouth that can be causing your bad breath. This may include heartburn, gastrointestinal illnesses, uncontrolled diabetes, kidney disease, asthma, cystic fibrosis, liver cirrhosis, tonsillitis, sinus infection, and other serious illnesses. In addition, certain medications can contribute to dry mouth or release chemicals that cause bad breath.

Another method is to use a spoon. Scrape the back of your tongue with the spoon and smell it. If there is a foul odor, it may indicate that you have bad breath. Alternatively, you can ask a trusted friend or family member for their honest opinion.
A dry socket is a potential complication that can occur when a blood clot in the gums becomes dislodged after a tooth extraction. Dry socket signs and symptoms include pain, mouth odor, and unpleasant taste in the mouth. A dentist may treat a dry socket with analgesic dressing. Over-the-counter pain medications can also relieve symptoms. A dry socket usually heals within 7 days. Avoiding smoking, drinking with a straw, and vigorous rinsing and spitting may help prevent the formation of dry socket.