Garlic and curry, and other similarly spiced up foods which basically contain onion, hot peppers and other spices. Spices tend to stay and re-circulate through essential oils they leave in your mouth.

Cheese – It gets a hold on your breath and doesn’t let it go. Sometimes, other dairy products too are responsible for bad breath.

Fish like tuna and anchovies, and spicy deli meats like salami and pepperoni also leave their respective peculiar smell long after you have had them.

While there are plenty of short-term products such as gums and fresheners on the market, most do not last more than a couple of hours and tend to only mask the bad breath rather than address underlying causes.

For this reason, many people are now turning to natural herbal and homeopathic ingredients such as Kali. Phos, Silica and Sweet Fennel to successfully help them with halitosis. Kali. Phos is well known for its antiseptic and cleansing properties and is effective at addressing putrefactive conditions such as halitosis, foul smelling flatulence and stools.

Silica works by cleansing the cells of toxins and ridding the body of bad odors, while addressing some of the underlying causes of bad breath such as gum disease, sinus infections and mouth abscess. Lastly, sweet fennel has a long history of use for treating digestion problems and is a popular aid to sweeten the breath.

You may get additional details here http://www.healthherbsandnutrition.com/remedies/h/halitosis.htm