When an elderly woman visits the doctor, she remarks,
“Doctor Although I have trouble passing gas, I’m not very bothered by it.
It is always silent and never smells.
In fact, while I’ve been in your office, I’ve passed gas at least 20 times.
You were unaware that I was passing gas because it is silent and had no smell.
“I see,” the doctor says. Come see me next week after taking these tablets.
The woman returns the next week. “Doctor,” she says.
“I’m not sure what you gave me, but even though my passing gas is still silent, it smells awful.”
“All right,” the doctor continued, “we’ll get to work now that your nose is clear.”