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source : https://in.answers.yahoo.com/question/index?qid=20120901063223AAtcoqa
The Vish Kanya(English: Poison girl) were young women reportedly used as assassins, often against powerful enemies, during the Mauryan Empire (321-185 BCE). Their blood was purportedly poisonous to other humans.
Believed to be started by Chanakya, Vish Kanya were used by kings to destroy enemies. The myth states that girls were made poisonous by exposing them to low-intensity poison from a very young age, a practice referred to as mithridatism. Although many of them would die, those that did not developed an immunity and their body fluids would be "poisoned", and poisonous; sexual contact would thus be lethal to other humans.
sounds really scary to me
Seher Hone Ko Hai
