DD had to do a science experiment on a classmate. Since we have two "students" Dear Brother got to be the guinea pig! He was very willing though. You had to hold your nose while tasting different foods and see if could tell what you were eating while your holding your nose. DD didn't really explain the whole nose thing to son. So he'd hold his nose for awhile then let it go. He'd tell us what he was eating after letting his nose go.