Your breath, body and clothing exude scent. Even with boots (which smell like people if you keep them indoors with you) it still gets pumped out of your clothes with each step, movement and breath. You leave a trail of odor molecules that drift or settle whether you touch anything or not.
If a dog can sniff out a bird think how much easier you are to find!
You can try and mask it, eat chlorophyll tablets, become a vegetarian of unseasoned food two months prior to and during hunting season, try and "stun" the deer's olfactory senses with a non-human scent (works once - then the deer just puts that scent in the "other dangerous smell" file), or work around it.
Be aware of the wind at all times. Work into it. But, deer aren't stupid and will watch downwind because they know the wind will bring them warning from that direction. Never approach a stand location from the prime direction of deer travel. An approach from downwind concentrates the "spoiled" region instead of having a wider contact plus airborne smear. Follow depressions to trap your scent when travelling to a stand: gullies, creeks, ravines, gourges.
I watched a doe cut my trail and stop after scenting the trail. Any ideas on counter measures or thoughts on this.
Shoot the doe as soon as it pauses.
Don't "over scout" a region immediately prior to the hunt. Deer will alter patterns if the area is "hot".