流毒

liúdú
  1. to spread poison
  2. pernicious influence

CEDICT

  1. pernicious influence; baneful influence
  2. to exert a pernicious influence; to have a baneful influence

Wiktionary

  1. 散布禍害。
  2. 留傳散布的禍害。

重編國語辭典

  1. 散布禍害
  2. 留傳散布的禍害

維基詞典

Entry Composition

1 流 liú
  1. to flow
  2. to disseminate
  3. to circulate or spread
  4. to move or drift
  5. to degenerate
  6. to banish or send into exile
  7. stream of water or sth resembling one
  8. class, rate or grade
2 毒 dú
  1. poison
  2. to poison
  3. poisonous
  4. malicious
  5. cruel
  6. fierce
  7. narcotics

Related entries

毒害 dúhài
  1. to harm (sb's health) with narcotics etc; to poison (people's minds); to corrupt
  2. pernicious influence
毋庸置疑，湯姆毒害了瑪麗。

There's no doubt that Tom poisoned Mary.

Source: Tatoeba

毒素 dúsù
  1. toxin
  2. (fig.) pernicious influence