The whiff of bad breath comes from the bacteria that lie in the plaque all around the teeth, be they Wisdom, unwise, or otherwise. 
If a person with false teeth drops them into a glass of fizz every night, then has anyone bothered to find out what one’s mouth hygeine status is whilst they are out?
I mention it, as there is a school of thought that suggests it is “cosmetically incorrect” to walk about at large with one’s false teeth still on the bedside table in the glass, because you’ve say, forgotten to wear them for the day.
Natrually, no one goes anywhere near guy with “medical ailment” as it were, but consider this…
When dating the girlies, what do they think of say, snogging a good looking guy that has a foul mouth (not from bad language, that is…) compared to a visually-displeasing individual let’s say, that happens to have fresh breath like a colegate advert, and knows how to use his tongue (again, not in the foreign languages way…!) to pleasing effect on the fair ■■■ that we are often led to believe “prefer kissing to fingers and tops”.? 
Stop sniggering at the back there. I’m trying to make serious conversation here!
