many sometimes. 20 years worth. but the defense spent of the day trying to discredit the scientist testimony claiming he had no background in chemistry that samples may have been contaminated and that the results of his analysis from unreliable. phil keating is live tonight in south florida. phil, the defense really tried to paint this scientist as an untrust worthy eccentric, didn t he. that included jose baez questioning him divining rod to walk around the grass finding hidden graves and water. he pointed out how the air samples were not done until 10 weeks after caylee anthony died a story quoted him describing what the smell of a human decomposition is to that of a potato. a potato gone bad. that it is sickly sweet. it doesn t smell like a swamp or rotten egg smell. if you ever had a potato go back bush administration in your