At the doctor's office a woman complained that she had been experiencing constant flatus. “Fortunately,” she added, “they don't stink.”
The physician did his physical exam, then instructed the woman “take two of these pills tonight and call me in the morning.”
The woman did as he instructed. In the morning, she discovered that her flatus continued, but now the odor was horrendous. She called him back.
“Well,” the doctor replied, “now that I've cured your sinus problem, I'll see what I can do about your flatus.”