A custom, an accidental opportunity thorough subversion body odor profession comes the wrong idea --- body odor production source for a long time which produces to the body odor to the big sweat gland. This custom origin and the western Hunan unique "catch up with the corpse" to have the close relation. Before, the western Hunan fellow villager went to east eastern Sichuan province or Guizhou Province the area picks the medicine for to live, these places multi- high mountain ridges, in the mountain the malaria very heavy, the pernicious malaria was frequently popular, the bystander reached this point extremely easily to catch an illness the death, thereupon some people created this strange economical means to transport corpse returning to home village. But these frequently have the social dealings with the corpse to catch up with the corpse person, in order to can remove year mildew in the new year to transport, then in first lunar month 15 this day a holiday medicinal bath, food element room. When at the beginning of the 80's, a Hong Kong doctor returns to the western Hunan native place new year's celebration, alight this kind of medicinal bath had to drive out the body odor function, thereupon then introduces to Hong Kong the expert. The experts pass through the long-term scientific research, finally discovered its treatment body odor the action mechanism, and Ji Ci had discovered the body odor produces true reason.