How to treat foul smell in teeth 

Bad breath

When you have tooth decay, there is foul and bad breath from your mouth.  Good teeth are one of the five fortunes, as Koreans say.  

Huh Im, a Korean doctor in the 1600s, recommends moxibustion at the following acupuncture point for the foul smell in teeth.  

Apply one moxa cone at PC 8 ??.

Here are some more articles for moxibustion if you may like to read.