An older woman went to the doctor and complained of bad gas. "But," she explained, "It doesn't smell and doesn't make any sound."
The doctor checked her over, gave her a prescription and told her to come back in a week.
When she came back he asked how she was doing she almost cried, "Oh, it's much worse, now it stinks."
The doctor kept a straight face as he said, "Now that we have fixed your nose we can start working on your hearing."