Don't know about how good they can smell..but I once corn fed a road accross a flowing creek bed that was around 8" deep and corn went into the water. I watched an axis doe eat corn to the water and then walk into it continueing to eat corn in the water. She had her water up to her eyes and ears and came up eating corn! So do not know about that for smell but I know she could see it for sure.
Is 7 year old 200lb+ buck poop similar in size to small doe poop? Or can y'all tell the difference?
It smells different...