During every 10-second French kiss, 80 million bacteria are transferred.

The next time you’re swapping saliva with your significant other, think about this: you’re probably swapping more than just saliva. According to this study, the microbes in your mouth can get transferred between you and your partner when you kiss. Specifically, these researchers found that an average of 80 million bacteria are transferred in a 10-second kiss (in this case, measured from a probiotic drink that one person drank prior to the kiss). In general, partners have a more similar oral

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