contaminated

contaminated

adj.
  1. containing undesired or infective microorganisms.
  2. rendered impure by addition of deleterious substances; as, had to boil the contaminated water.
  3. damaged by inclusion of incorrect data or information not belonging; as, The file was contaminated by a buggy editor. (Computers)
  4. appearing unethical due to a questionable source or motives; -- of money or activities; as, The fund was contaminated by a large donation from a mobster.