Attorneys with Anthony's defense said they wanted any mention of the smell in her car disallowed. They said investigators mishandled trash that had been in the trunk.
The smell in the car and the stain in the trunk are key pieces of the state's argument that Anthony knowingly drove around with the body of her daughter, Caylee Anthony, in the trunk and has knowledge of what happened to her.
READ: Motion For Spoilation Of Evidence
In a response to Anthony's defense motion to exclude any mention of the stain, prosecutors said it is evidence that the child's body decomposed for several days before Casey Anthony dumped it in the woods.
For their part, Anthony's defense filed a motion accusing the state of deliberately mishandling several empty containers, including a pizza box found inside a trash bag taken from the trunk.
The defense accused investigators of letting the trash air out, so it would not smell the same to jurors in Casey Anthony's upcoming murder trial.
One source close to the investigation said on Friday that position is "laughable."
The defense is asking that, based on the mishandling of the trash, any mention of the so-called smell of death in the car should also be excluded.
Judge Belvin Perry ruled on Thursday that evidence of Casey Anthony's alleged history of lying, her tattoo purchase, her MySpace postings and testimony that she never told her boyfriend that Caylee was missing should all be included as state's evidence in the trial.
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