A little old lady walks into her doctor's office, "Doctor, I've got a bit of a problem, but it's not really a problem. I keep farting all the time, but the funny thing is, they don't smell and they don't make any noise.".
The doctor thinks about this for a few seconds and then writes out a prescription, "Take these pills for a week, then come and see me again.".
A week later the little old lady walks back into his office, "Doctor, I don't know what was in those pills you gave me, but now my farts absolutely stink... but the funny thing is, they still don't make any noise!"
The doctor smiles and grabs his prescription pad, "Good, now that we've cleared out your sinuses let's see what we can do about your ears!".