1. Hmmm, bad breath ?                            

try activated charcoal + water then mix in a small bowl. Dip your toothbrush in the bowl and brush your tongue and teeth. Lastly rinse it.

2. How about a yellow teeth?

Get a foil and put toothpaste at the center. Then sprinkle some baking soda then wrap it all over your teeth. Wait for 5 minutes then rinse it.