According to statistics, about 15% of adult Americans suffer from hearing impairment. Often the cause of this disorder is obstruction of the auditory canal with earwax, which can lead to serious consequences, even to deafness.
The body in its entirety is self-cleaning. It means even the most internal or hidden of organs have a way of removing foreign bodies. Take the ears for example. They produce wax that traps dust and any other unknown object going into the ear.