An old woman goes to the doctor, and says, 
"Doctor you have to help me. I have terrible gas,
but the good thing is that my farts are silent, 
and they don't stink. In fact, I have farted 
twice since I got here and you didn't even 
notice." 

The doctor replied, "No problem, take these pills
and come back in one week." 

So one week goes by and the woman returns to the
doctor and says, "Jesus, I don't know what you 
did but now my farts reek." 

The doctor says, "Good, now that we cleared up 
your sinuses, lets work on that hearing."