Student dentists in the lab (IMAGE) University of Leeds Caption Researchers simulated dental treatments in a real surgery using a harmless virus to track the spread of aerosols in the air and on surfaces Credit University of Leeds Usage Restrictions Free to use License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.