maybe its your blind
have you washed it? lots of smells in commercial things made
I always used to wash my pop up blinds far in advance, with scent shampoo's , treat them with UV treatments(deer can see UV colors and a BIG blind that has UV colors will stand out like a spot light IMO)
and then, I would find a nice BIG muddy puddle and roll the blind about in it, let it dry, and then store in a scent free area!
the amount of noise setting up a blind can also alert near by deer and make them nervous when traveling in the area they heard them in earlier!
do you set it up every time you go in and not leave it, giving deer a chance to get used to it
as Blind set up, changes the lay out of the land and will make some deer very nervous!
I always used to try and set blinds up a few weeks in advance to allow deer to get used to them
if worried about getting stolen on public lands, Maybe SKIP the blind and make a more natural one
don't need a commercial blind to kill deer!
keep in mind, that deer on public lands that get pressure will be more sensitive to things, than deer less hassled!
won't call them smarter, just learning to survive is all!