Bohannon is now the head coach at Kennesaw State.
Johnson and Georgia Tech will play Smart and Georgia on Saturday in Athens.
Johnson said he likes Smart, having spent some time with him at the Chick-fil-A golf tournament in the spring.
“I don’t know if fans quite understand that relationship,” Johnson said. “We have an appreciation. I certainly have an appreciation for what he goes through. He’s starting to develop one for what the other guys go through.”