Exactly! Down here in farm country in the SW, or NW for that matter, deer smell human scent all the time. It’s the strength or concentration that alerts them. I’ve had deer follow me into my stand, walking through cut corn with heavy frost, hardly quiet, and certainly laying down scent. I do use scent killers and lay down doe scent as well on my way in.
Some of the best luck I’ve had in past years is using pure vanilla as cover scent.