Most of us awaken each morning with bad breath in the morning and it should go away after brushing and flossing away the plaque on our teeth and soft tissue. When it comes to bad breath, bacteria are the actual culprits and they hide behind plaque because it is a low-oxygen environment and saliva cannot penetrate behind the protective layer. Preventing bad breath is often as simple as brushing and flossing but those who fail to do this when they awaken will develop worsening halitosis throughout the day because the bacteria population will grow quickly behind the plaque.