You can easily distinguish between a tuna fish salad sandwichand a chicken salad sandwich by their smell, because airborne molecules from tuna salad and chicken salad:

Question

Quizplus · Accepted Answer

Airborne molecules from different foods stimulate different patterns of odor receptors in the nasal cavity, which in turn create distinct perception of smells. In this case, the molecules from tuna fish salad and chicken salad stimulate two different patterns of odor receptors, allowing us to distinguish between the two sandwiches by their smell.

You Can Easily Distinguish Between a Tuna Fish Salad Sandwichand