To put a bear's sense of smell in perspective. My research states that a bloodhound can smell 300 times better than a human and a bear can smell seven times better than a bloodhound. That makes a bear's sense of smell 2100 times better than ours. Impressive!
Bears rely more on their sense of smell than their eyesight or hearing. A bear can still smell human odor on trails for up to 14 hours after you have been there. It is highly recommended that you wear rubber boots when hunting your station.
As bears mature their sense of smell does too. They become more aware of their surroundings and natural scents in the air. That is why you will end up getting pre-teen bears coming in sooner than a mature boar. Baiting is a great opportunity for hunters to mask their human scent with attractants. It allows bears to let their guard down and come in.
If you notice this season that you are having a hard time bringing in an old boar. Take note of what you have been around. Deodorant, detergents, soap, hair products, lotions, even the air-freshener in your vehicle
A tip to get the smell out of your hunting clothes:
Pour a layer of Arm & Hammer Cat Litter in the bottom of an airtight tote.
Place a trash bag flat over the litter and lay clothes in and shut for 24 hours. The carbon and arm & hammer from the litter will lift the smells out of your clothing. Get the musty smell out
Lots of new baiters this year. I thought this might help ya out