If a Deer were to Blow at me as I was walking in to my stand I'd just ignore it. They blow at Turkeys, Coons, etc. I doubt it will affect my morning hunt anyway.
Did it stomp with its foot too. Chances are it did.
And what if (a big what if) that stomp released an odor that only whitetail could pick up on.. smell an odor that another deer left behind that signaled danger.
What if..??