Breathing NORM contaminates from dusts should be prevented by wearing respirators with particulate filters. Solvents are used to simply clean the surfaces of any contaminates or debris. The infalling dust in turn contaminates the upper atmosphere of the planet. Leaded gasoline contaminates the oxygen sensors and catalytic converters. Also, none of the smog-forming contaminates are emitted. Additionally, the manufacturing process for 2,4,5-T contaminates this chemical with trace amounts of 2,3,7,8-tetrachlorodibenzo-"p"-dioxin (TCDD). Testing private wells for contaminates is important. David contaminates a drink he gives Holloway to impregnate Shaw with an extraterrestrial life form. Screens or filters may also be used to trap contaminates. But applying means-end reasoning to control spirits and inanimate objects contaminates human knowledge. A thief steals the genetically engineered T-virus and contaminates the Hive with it. Separating the criteria contaminates reasoning about the good. If blood contaminates food during pre-chewing it may pose a risk of transmission. Gloria contaminates Ashley's new line of beauty cream, which causes a woman to die. Hence the anchor contaminates the estimate, even if it is clearly irrelevant.