单项选择题

B 根据下面短文回答下列问题。 One day a man went into a chemist’s shop (药店) and said, "Have you got anything for headache (头痛)" The chemist took out a bottle and put it under the man’s nose. The smell (气味) was so strong that tears came into the man’s eyes and ran down his face. "What did you do that for" the man said angrily. "But you didn’t have headache, did you" said the chemist. "You fool (傻瓜)," said the man. "It’s my wife that has the headache, not me!"

The doctor took out a bottle and put it under the man’s nose, because he ______.