How do insects use their sense of smell to find food, to find each other? Objective Using discovery, activities and observation, students will better understand the role of little creatures as they relate to their habitat and other living things. Background Use an area that is fairly large and flat. Ask the students, “How do animals find one another in the forest?” (Mostly through the sense of smell.) Many animals have glands located on their legs or their lower body. These glands produce odors which are left on the ground. These odors help one animal track another. Tell the students that they Duration: 60 Minutes.