一个人绝不能同时既打嗝又打喷嚏。无论是谁,即使面对镜子,也看不见自己打喷嚏时的形象,因为人们总是闭着眼睛打喷嚏的。人的嗅觉按年龄排列,10岁以下儿童较差;20～40岁最好;50～60岁开始下降;65～80岁的人有45%嗅觉严重丧失,15%完全丧失。依性别而言,女性比男性嗅觉要强,丧失嗅 One must not be burping and sneezing at the same time. Whoever is, even in the face of a mirror, can not see the image of her own sneeze, because people always sneeze with their eyes closed. People’s sense of smell by age, poor children under the age of 10; 20 to 40 years of age the best; 50 to 60 years of age began to decline; 65 to 80 years old 45% of the serious loss of smell, 15% completely lost. By gender, women smell better than men and lose their sense of smell