Several studies have shown that cinnamon has antiseptic properties and kills bacteria…
How to use it: To make a tea, mix half a teaspoon of cinnamon powder in a cup of boiling water. For bad breath, mix it with cold water and use it to rinse the mouth. Cinnamon also can be used for disinfection of the hands, usually in the form of essential oils.
Warning: cinnamon contains coumarin, which can damage the liver and kidneys, if you enter it in large amounts. In small quantities it is totally harmless.