contaminated

/kənˈtæmɪneɪtɪd/
adjective
  1. Made dirty, impure, or unsafe by the addition of a harmful substance.
    • They recalled the product because it was contaminated with salmonella.
    • Do not drink the water; it is contaminated.
    • The contaminated soil had to be removed from the playground.
  2. Affected by a harmful or unwanted influence.
    • The contaminated data led to incorrect results.
    • His contaminated thinking was shaped by years of propaganda.
    • The investigation was compromised by contaminated evidence.