NEW : An investigator testifies an odor coming from the car was likely from human remains . The defense argues the odor could have been caused by an animal . In one recording , Casey Anthony responds sarcastically to a rumor her daughter drowned . Comment:
NEW : An investigator testifies an odor coming from the car was likely from human remains . The defense argues the odor could have been caused by an animal . In one recording , Casey Anthony responds sarcastically to a rumor her daughter drowned . That is her defense team 's explanation for how 2-year-old Caylee died in 2008 .