A Simple Sniff (2 of 2) (IMAGE) Washington University in St. Louis Caption Engineers at Washington University in St. Louis used nanoparticles, aerosol technology and locusts in proof of concept research that could someday change the way medicine is delivered to the brain. Credit Washington University in St. Louis Usage Restrictions None 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.