Home Remedies: The bad breath battle
There are many causes of bad breath, also called halitosis. Your mouth may be the source. The breakdown of food particles and other debris by bacteria in and around your teeth can cause a foul odour. If your mouth becomes dry, such as during sleep or after smoking, dead cells can accumulate and decompose on your tongue, gums and cheeks, causing odour.
Eating foods containing oils with strong smells such as onions and garlic can lead to bad breath. Foul-smelling breath also may be a symptom of illness, such as lung disease, diabetes or liver failure.
Source: MAYO CLINIC, by Dana Sparks