But let's scale smell! Even humans can smell ppl that haven't showered in days. Shower with a non-scent soap and ppl can no longer smell you.

Scale this to a deer's nose. It's all about PPM of scent molecules. You CAN reduce your scent to a degree where a deer may NOT smell you. But if you have more PPM of scent, then a deer will be more likely to smell you.

Reduce your PPM and you'll get busted less. No, you can't fool a deer's nose but you can take steps to lessen the detection. IMO, of course.