A man goes to the doctor and says, "Doctor, I don't know what's wrong with me. I keep farting all time, but they're silent and they don't smell. In fact, I've farted five times since I walked into this room." The doctor says, "Okay, here, take these pills and come back in two weeks."
The man goes home, takes the pills for two weeks, then goes back to the doctor and tells me, "I don't know what was in those pills, but now when I fart they smell terrible."
The doctor smiles and says, "Good, we've cleared up your sinuses, now let's work on your hearing."