You can't hide your scent from a coyote, period!! Does it matter? Greatly! If a coyote smells human, it doesn't stand around trying to figure out how long ago the human was there, or how far away the human is, instead it begins to depart the area immidiately!
Can you wear enough cover scent to hide your scent? NO!! No matter what cover scent or how much of it you wear, the coyote will smell you. Period!!
When calling coyotes, always keep the wind in your favor and walk into the stand in an area where the coyote won't cross your tracks. Set up in a way that forces the coyote to expose itself in an open area before it can reach your scent cone, and then take the shot before it smells you!