Sometimes scents work and sometimes they will spook deer. Similar to deer calls it depends on how wary the deer are. The more the area is hunted then the less likely lures such as scent or calls will work.
I am not into deer scent much since I hunt downwind of where the deer should be and they wouldn't likely even smell it. If they did it might lure them down wind of my location where they could pick up my scent as well. I have had better luck using calls to lure a deer into shooting range.