Do you have to close the door after you go to the bathroom?

Have you also experienced open the door into the toilet, you feel stuffy, smelly, and in the face of this problem, many people choose to open the door to ventilate, in order to improve the internal air environment of the toilet, but this practice is really correct? Toilet door in the end should open the door to ventilate or close the door to prevent bacteria? Let’s understand through this picture.