Bears are very intelligent, and they have keen senses of smell.
They usually avoid contact with humans. Don't underestimate the will or resourcefulness of a bear. It is not desirable to have bears socialize with humans. Bears that become accustomed to being around humans and that develop a liking for human food tend to seek out the easy pickings of human campgrounds. Bears that grow accustomed to the presence of humans become less afraid of humans, and bears that lose their fear of humans act more aggressively toward them.