Smith (hamstring) was listed as a non-participant on Wednesday's estimated practice report, Paul Dehner Jr. of The Athletic reports.
Smith was inactive for the Bengals' Week 3 win over the Rams, and his listed non-participation to begin Week 4 prep clouds his status for Sunday's game against the Titans. If Smith remains out this weekend, Drew Sample and Mitchell Wilcox would once again absorb most of the snaps at tight end.