Four-Foot Biosensors (IMAGE) American Chemical Society Caption A mouse earns a water reward for choosing the odor of samples of feces infected with avian flu over a feces sample from ducks that were not infected. Credit Maryanne Opiekun, Ph.D., Monell Chemical Senses Center 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.