Scientists probe what makes corpses smell

SYDNEY scientists are attempting to identify what makes a rotting corpse smell to help train sniffer dogs.

University of Technology Sydney (UTS) forensic experts are using decomposing pig carcasses - which have a similar smell to human corpses - to create a chemical profile of a decomposing body.

The scent profile will be able to be used in forensic investigations, scientists say.

"We've already identified over 800 chemical compounds," Shari Forbes from UTS's School of Chemistry and Forensic Science told AAP.

"From that we can identify which molecules dogs focus on by looking at which compounds consistently show up.

"That can be used by cadaver dog handlers worldwide to help them rapidly and accurately locate human remains."

As part of the study, professor Forbes and her team of researchers buried pig carcasses or placed them on the ground.

The scientists visited the carcasses at various intervals to observe the decomposition and capture the odours.

This involved trapping the scent into a tube, taking it back to the lab and analysing it, professor Forbes said.

They also measured environmental variables such as temperature, wind, rainfall, as well as the scents of nearby vegetation.

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