I think the idea that deer tend to avoid unfamiliar smells is not really true. Several years ago a local peanut processing plant had a fire in a storage barn. It was loaded with 50lb bags of shelled raw peanuts. Even though a large part of the bags suffered no damage other than a little smoke, they could not be used for human consumption. I managed to get my hands on 10 bags , I alternated them in feeders with corn, it attracted deer like crazy. I have seen new scents introduced today, and tomorrow deer would be all over them. Cinnamon candy (Red Hots), vanilla flavoring, or even human urine have attracted a deer's attention, and caused them to come in and investigate. Apples are another good example. How many areas that you hunt have apple trees nearby? I don't know of an apple tree within forty miles of my place, but drop a few apples and the deer are drawn in like flies to a forth of July picnic.
Several years ago an oil exploration company came in, cleared an area and set up a test well on my place. This was two weeks before the season opened, they worked around the clock until three days before season opened when the tore the rig down and moved out. The area where the well site was located had been pushed with a bulldozed, all trees and grass were removed in the approximately 3/4 acre area. Opening day a hunter said there were 10-12 deer on the site at daylight, and shortly after sunup a nice buck was killed standing in the opening. There was still a lot of smell from the toilet site, and from oil and gasoline spills (they cleaned them up later). The point is, deer are naturally nosy by nature and will investigate a strange smell.
My advice, if you can legally use the C'Mere Deer, or any other attractant, then give it a try. It just might be the ticket for a wall hanger.