How do we smell? Where does it come from? How does it go into our nose? Smell is all around us.
For example, when smelling flowers, the smell never goes away. It is because of the arrangements of molecules. By the arrangement of the molecules, the smell changes. “It is some kind of molecule, arrangement of atoms, that has worked its way into our noses.” Said Richard Feynman.
Our nose takes in lots of smells. Smells do not exist if we do not have noses! The molecules of flowers are glad, I think, because we can smell them with our wonderful noses!