The Power of an image can be enormous, especially when it recalls a memory. I am currently scanning some old 35mm slides and came across one that was an image of one of our pet fishes, an Oscar (South American rock bass). The actual image, below, isn't a very good image, it is dark and slightly out of focus, but it instantly resonated with me and when I first saw it I immediately recalled the actual smell of the scene! Don't ask me why the smell was the first thing my brain remembered, I can't answer that. It was as if I was standing right there in front of the fish tank. I could smell the water vapors coming from the filtration system. I could make out the smell of the fish in the water. I could smell the hard water scale on the top of the tank. I could even tell that the water needed cleaning, all from a memory that was instantly recalled from just seeing that one image!
After looking at that image for a while, I began to remember other things not related to smell, like feeding the fish cat food by hand. We would hold a small piece of cat food above the water about half an inch and the fish would actually rise up out of the water (not jump) and take it right out of our hand without ever getting our fingers. I also remember that if you put up a mirror to the side of the tank the fish would attack it, and if you put your face up to the take and opened your mouth it would try to attack you also. It was soo cool as a kid to do!
Memories, that is the true power of an image; to invoke memories.