It's important to remember that humans definitely have a strong smell, that is also a bit distinct.
Humans are the world's smelliest animal, study shows
It requires a bit of extrapolation and speculation to consider how this applies to bears, but we know that they are often more curious than anything. It's hard to say what they make of humans, though there is likely ancestral knowledge passed down that we are wildcards.
We also know that bears generally prefer to scavenge than exert the energy/take on the risk involved in hunting - they literally prefer the 'low hanging fruit'. I imagine their 'Terminator' brains are probably running subconscious calculations on any encounter, and are unlikely to take purely aggressive action (aggressive-defensive another story) unless a whole bunch of stars align, including a desperate need for food.