Is it normal to share a toothbrush?
Depends.It depends
People sometimes share a toothbrush in a pinch, but it’s better not to make a habit of it. Toothbrushes can transfer saliva and tiny amounts of blood, so having your own is the cleaner choice.
It happens—especially when someone forgets theirs or you’re traveling—but most people would rather keep toothbrushes personal. Even a well-rinsed brush can hold germs, and sharing can expose you to saliva or traces of blood from irritated gums.
If it happened once, there’s usually no reason to panic. Just rinse the brush well and switch back to your own; next time, a quick rinse with water or waiting until you can get a spare is preferable to sharing.