Just like a common-cold or flu virus can infiltrate the body while locking lips, the same goes for cavity-causing bacteria. A kiss can bring cavity-causing bacteria to your teeth.

Among adults, kissing is an extremely common way to pass those tooth-decaying cavities. These bacteria can also be passed via other methods besides kissing, as well. It can be as simple as sharing food with your friends and others that would be just enough to transmit bacteria.

Don't let it affect your love life too much. It can be prevented by taking some precautions like brushing, flossing, and chewing sugar free gum. These things will wash bacteria away from your teeth and keep them clean.