The police dogs can identify the criminals on the basis of smell of their bodies. This clearly proves that each of us has a special kind of body smell. On the basis of certain experiments it has been established that even the twins have slightly different smell. Dogs with some special training can even identify between the twins Do you know why everybody has a particular smell?
The body smell depends upto some extent on an oily liquid secreted by sweat glands in the body. But the scent is mainly the product of bacteria that feed on sweat. When a child is born, he picks up many bacteria from the mother, and those who touch him. Their number in cases as the child comes into further contact with others. Within several days of the birth many kinds of bacteria settle down permanently on our skin all through our lives. The types of bacteria may differ from person to person and they produce different types of odour in different persons. That is why, different persons have different smell.