There are quite a lot of home recipes for toothpaste that you could use to try and illuminate bad breath. Here’s one of the more interesting recipes I found in my search

Vanilla & Rose Geranium Toothpaste

Ingredients
½ oz of powered chalk
3 oz of powered orris root
15 drops of rose geranium oil
Runny honey

Recipe
Take all the ingredients and using a pestle and mortar grind all the chalk into a very fine powder. Add the other ingredients and make into a soft paste. Add enough honey to make into a toothpaste consistency.

! Make sure you store you homemade toothpaste some where cool and in an airtight container. When it comes to using the toothpaste take a small stick (something like a tongue depressor) and scoop enough toothpaste out and spread onto a damp toothbrush.