Serious conditions, such as kidney and liver failure, can also cause very bad odors.
Treatment depends on the underlying cause.
If you have gum disease, be sure to see a dentist or periodontist for treatment. Avoid foods that cause bad breath since the odor from onions and garlic emanate from the lungs. Brushing, gum, mints or mouthwash will eliminate this odor. If you have a lung, liver or kidney disease, or a gastrointestinal condition, that underlying condition would first have to be corrected. If your question was not addressed, please click here.