Sewer smell in bathroom is the profoundly lousy experience for you. Am I right? Maybe you have bored getting the sewer smell in your bathroom. The leading cause of sewage smell is the harmful methane gas which can threaten your health, even explode can cause high levels of methane.
Remember kids....when you go out into the real world, its always important to have a buddy. You should stay with your buddy at all times. Even when you go to the bathroom. (Thanks Price!)