The idea behind cover scents is thatyou can mask or hide your scentby adding a stronger scent to the situation and preferably one that won't spook a deer. I guess we humans want to think that if we give them something nice to smell or something mundane like dirt then they won't notice that scary smelling human. I highly doubt it. A deers sophisticated nose is constantly and simultaneouslybombarded by hundreds of smells and they are always paying attention and sorting out what scent interests them. I think the idea that theywill only notice the strongest of these is naive.Look how a hound can not onlyfocus on a human track out of all the other smellsit encountersbut it can even focus on that of a specific human. It's said that a deer's nose is at least as sophisticated.

Consider the guy who sprays himself with apple scent. My bet is a deer says to himself, "that's just great, theres a whole bunch of apples overthere and some idiot human is right in the middle of them."

I just don't buy the idea that a deer will only notice one scent even if it is the strongest one. I think they process dozens and dozens of scents all the time, sort them out and react to the ones that interest them.

Anyway, that's my 2 cents.