Venom
The word comes from the name of Venus who names means love, charm, adorn, and to worship. Venus was known for creating a love potion which she used to help Aeneas to escape from the burning city of Troy. She protected him from the enmity of Juno. She made Dido, queen of Carthage, fall in love with him and grant him refuge at a time when Aeneas's had his back against the wall. Venom became malicious over time and became a word that means a malicious deadly drink. As Edgar Allan Poe wrote
IIIAnd pride, what have I now with thee? Another brow may ev'n inherit The venom thou hast poured on me Be still my spirit!