Morning – Saliva clears the mouth of bacteria, and the saliva glands almost completely shut down at night. As a result, more bacteria accumulates in your mouth during the night, resulting in bad breath when you wake up in the morning.

Food – If you eat a lot of onions, garlic, and other strong-smelling foods, this may be the cause of your bad breath. These odors linger in your body for a long time before being exhaled, resulting in bad breath.

Tobacco products – The saliva glands in the mouth are suppressed by tobacco use.

Periodontal disease –Inflammation is caused by bacteria and food trapped between the teeth. This, too, can cause bad breath and other dental problems if not properly removed on a daily basis or at routine dental hygiene appointments.

Dry mouth – It’s possible to get bad breath if you’re on some drugs, breathe mostly through your mouth, or have a difficulty producing enough saliva.

Poor oral hygiene habits – The food particles that stay in your mouth if you don’t brush and floss properly will cause bacteria to develop, resulting in bad breath.

Dehydration or Hunger – Saliva flow is boosted and bacteria are washed away by drinking water and chewing food. This may also be the case if you aren’t drinking or eating enough.