At LSU, Smith became the first player to wear the number zero in school history. In his freshman year, Smith would tally 19 tackles, four sacks, and five tackles for loss. Three of Smith's sacks would come against
McNeese State. Smith would suffer a leg injury and miss the rest of the season. Smith was named to the
All-SEC Freshman Team and the
Freshman All-America Team. To open the
2022 season,
LSU played
Florida State in the Louisiana Kickoff. During the game, while celebrating a play, Smith
tore his ACL prematurely ending his season. He returned the following season, totaling 27 tackles and four and a half sacks, before declaring for the
2024 NFL draft. ==Professional career==