If there’s one thing that absolutely no one likes, that’s bad breath and tolerating bad breath is simply not an option. People can have bad breath due to several reasons. If it isn’t the oniony or garlicky breath that will subside after a few hours (or days if you really feasted on these ingredients), it is a cause for alarm. Bad breath might indicate an underlying medical condition or oral health issue. In order to understand that, you need to find out what causes bad breath.