How Bad Is It Really to Share a Toothbrush?

We’ve all been caught without a toothbrush. You’re vacationing at a house rental, camping or staying at a friend’s or date’s place and forget one. And yet, you don’t want to go to bed without freshening up your mouth. So, you grab for someone else’s toothbrush and give your pearly whites a little scrub. Better.

But is it?

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