Under controlled conditions, Flinders University researchers are investigating third-hand contamination risk from methamphetamine use. Credit: Flinders University

Under controlled conditions, Flinders University researchers are investigating third-hand contamination risk from methamphetamine use. Environmental health experts have found open windows and ventilation can reduce but not completely remove methamphetamine contamination on most hard surfaces of a car after an extended period.

In their new study, researchers tested various parts of a car's interior to show concentrations in the air and surfaces exposed to controlled release of methamphetamine smoke.…