RE: Deer like the sent of Walnut?
Comment....
I've learned in my 43 yrs on this earth that deer like what your area has to offer. Meaning, if there's apple orchards in your area then apples is a food and cover scent. If (which I'm not sure they eat walnuts), but use the walnuts as a cover scent.
Here in Arkansas I use what they call an Earth scent as well a scent lok suit, and I've not been winded since using the two.
Good luck and happy hunting