The absolute number of chloroform searches was discredited in court.
The chloroform itself was a red herring. The two expert witnesses did not agree about the concentration in the air samples: one said it was extremely high, the other felt it was far less.
Furthermore, despite the State running a fine tooth comb through Casey's and the rest of the Anthony's lives, they found absolutely no evidence that chloroform was obtained by any of them from any source, and there would be no logical reason for any of them to possess it. The idea that Casey (or anyone else) made it in the laundry sink is ludicrous.
snipped by me.....
The how+to+make+chloroform search was not discredited and Cindy did not say she made that search.