We have bacteria in our mouths that are natural odour eaters.
Researchers from Kings College (U.K.) have isolated bacteria that mop up the smelly compounds in our mouths that are linked to bad breath. Up until recently these particular bacteria were known to exist as part of the normal oral microbiological environment but their role was not recognised.
The same group of researchers have previously found the same offensive compounds associated with smelly feet. Strains of odour eating bacteria are also part of normal foot microbial flora.
The odour-eating bacteria has been found in the tongue and gum edge of volunteers. It is not known whether quantities of these bacteria are the determinate factor in preventing bad breath.
Maybe research will be able to lead to using nature's tools to reduce bad breath and foot odour!
*Information from British Dental Journal (2005):193