Why shouldn't the bathroom directly face the corridor

Why shouldn't the bathroom directly face the corridor

Do not face the toilet at the end of the corridor , to prevent the stale air from the toilet rushing into the corridor and polluting the whole house. If you have a long corridor in your house, pay attention to the relationship between the corridor and the bathroom. The toilet should only be located on the side of the corridor, not at the end of the corridor. This is a kind of indoor road flushing. The flushing of the toilet by the corridor is a serious phenomenon, which is extremely harmful to the health of the family.