On Aug. 6, Irish swimmer Michelle Smith, who won three gold medals at the 1996 Olympics, was banned for four years for tampering with a urine sample she had submitted for a random drug test. Over the years athletes trying to mask illegal drugs have used vinegar, cleaning fluid and detergent; Smith's sample was spiked with what one investigator termed "a lethal concentration of alcohol," perhaps whiskey. Here's a sample of other methods of circumventing drug tests.
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