Not sure how strong of a connection this is, but Q used the term taint when talking about the operation Q-T2810C to mix bad info with good info.
This article about Cohen office raid uses the term to describe how the FBI will use a 'taint team' to prevent prosecutors from seeing anything considered privileged.
http:// www.dailymail.co.uk/news/article-5598833/Trump-sputter-tweets-FBI-raid-lawyer-Attorney-client-privilege-dead.html