I have seen mentioned that some pple use vanila extract as a cover scent. Do you use this along with a scent nuetralizing spray, or does the vanila take the place of it? and if so, how do you make or mix the vanilla extract so u can use it as a spray? But lets say you have been busted by the deer and you was wearing the vanilla, wouldnt they associate the vanilla with you after that?

I've heard of vanilla being used as an early season attractant / curiosity scent, but never as a cover scent. I think the idea is to use like you would a doe-in-heat scent or something like that. Put canisters out at 20-30yds. I tried it many years ago and got NO reaction whatsoever.

Now I just go as scent free as possible and don't give the deer anything strong to smell that might make them try to smell me! I don't believe cover scents can work anyway because deer can easily distinguish many scents at the same time.

... Shockwave

I don't know about vanilla. I agree that instead of a cover scent, it would be more of an attractant.
For me, I keep things simple. I don't use carbon suits or spray or anything like that.
The one and only thing I do is, well maybe two, I always try to shower before hunting with a scent eliminator, but I don't always have time.
For my clother, I seal them in a plastic bag with these scent wafers. I believe they are made by HS Scent. I get them at Walmart and use the dirt scent. It smells like dirt. Thus far, I have never had a dear smell me. I've had themunder and around me, but they haven't seemed to smell me, even after sweating, some times alot.
I do try to watch the wind, but that isn't always possible.
Being still and quiet is often what is most important.
I like to keep things simple, in fact, I've never had much noticable luck with doe in heat scents. Find a travel route, get out of sight, stay still and quite, and wait for the shot.