The last thing I worry about is what soap I use to wash my body or my clothes (unless we are talking insect repellent). If an animal catches your wind - whether you have bathed in ivory or water from the river Jordan - they will scent you. Period. To my PH's and trackers relief, I use Arid Extra Dry every morning and a scented balm for shaving. I also brush my teeth with a peppermint flavored tooth paste. Pretty sure that I have never startled an animal that wouldn't have been startled anyway by that frustrating shift in the wind.
The key is to not let a target get your wind or see movement. The rest is for the obsessive compulsive amongst us who also worry about copper fowling, appropriate camouflage, survival kits, or that the 6.5 PRC or Creedmoor might actually be something new.