I am with huey on this one, especially after watching our chocolate lab trying to find us last year. Took her about a 1/2 hr to figure out the trail and she went the wrong way twice before finally tracking us to the tree. She still did not know where we were until we could not hold our laughing any longer and she looked up at us. Our trail was only 1 hr old. Had it been 3-4 hrs old, who knows ? If we had sprayed down our boots a little better ? I do not think you can totally escape a deer's nose but do think you can knock down the amount of scent you are leaving by using rubber boots and pruning shears. We clean the last 400-500 yds to our stands every year and are very careful not to brush against anything that would leave scent at ground level.
And one more thing..... everything you hear about older bucks being a different animal... IS TRUE ! I have witnessed this firsthand the last two seasons. Almost makes you think that getting within 30yds of a freaknasty is almost impossible. I am convinced now more than ever that you have to have a ton of luck too. I lost my chance on two huge bucks over the last two years with one errant swirl of the wind. One turned wrong side out since he got a full whiff pushed by a 20mph wind, scent falling on a evening hunt. The other simply got a faint whiff, stopped in his tracks, processed the scent, then simply turned and walked back the way he came. And don't kid yourself, they get more sensitive and in tune with scent as the season progresses. About the only chance you got IMHO is the two weeks the cannot smell us for the overwhelming scent of hot does in the air.