Please let me know if there is any "treatment" to bad breath?

Three possibilities. Bad breath usually is caused by one or a combination of these three problems: teeth, sinuses, digestive issues. First see dentist for a complete exam and cleaning to fix and/or rule out dental issues. If not resolved then see ear, nose and throat specialist and gastroenterologist. Your choice which one first. In the mean time brush and floss twice daily and use listerine or pro-health mouthwash.
Breath. Bad breath has many causes. Start by getting a thorough exam at your dentist to rule out decay/gum disease. Then got to your gastroenterologist and have an examination to see if the cause is systemic. Let us know how it works out.