Bad breath can create socially embarrassing moments and/or can ruin relationships.   Bad breath could be a manifestation different factors.

Bad breath can be caused by foods such as garlic that could last 24 to 48 hours.  Another source of bad breath is a result of bacteria in the mouth and on the tongue which produce volatile sulphur compounds in the form of hydrogen sulfide.  Furthermore, bad breath is caused by gum disease or even problems with the digestive system.

Depending on the cause of the bad breath, there are different solutions available.  However, the cause of it could be determined first.