Fairy dust will work as good as anything......You can't cover scents period. If a little mud or pine scent could cover your scent then they couldnt smell you when you walk on dirt or pine needles. Or a does track when it crosses a corn field. Just think how little scent you put off compared to all the scents in the outdoors. A deer can smell you because they smell on the molecular level...not on which scent is strongest.
I try to not cross a deers path on my walk in and I hunt the wind. The area I hunt is hard to get to without bumping deer because it's a thick bedding area. A deers nose is very hard to fool. I plan every hunt on the wind direction and will not hunt if I can't get the wind I need. If they can't get your scent you have half the battle won but don't think you can fool them with a squirt pee or dirt smell.