Bad breath is a very embarrassing problem, you can’t smell it, others won’t tell you
According to relevant data, one out of every three people in the world has a bad breath problem.
So how do you judge if you have bad breath?
There is a simple and small way to wash your hands first, and make sure that there is no smell of hand sanitizer or hand cream on your hands, then use your tongue to rub the back of your hand and wait for a while, after a few seconds, the saliva evaporates. The nose smells the back of the hand that has just been licked, and it is easy to judge whether you have bad breath.