Hammock camping and bears.

I am preparing for another LASH of the Appalachian Trail (200+ miles!) which will take me through Smoky Mountain National Park and I cannot shake the idea of a bear coming under my tarp while I’m trying to sleep I don’t know why this fear won’t go away

This is not my first rodeo but this time around I just can’t shake the bear situation and how prevalent they are in the Smokies. Maybe it’s the shelters with the fences? Has anyone had any curious bears get a little too close to their tent or hammock? I know I’m being stupid. Please feel free to make fun!