Calgary Stampeders

Smith impressed the scouts with at the 2014 CFL Combine in March. He had not been ranked on the CFL Scouting Bureau's winter scouting report, but he was listed as the number 4 prospect after the combine.^[3]

Smith was selected in the first round of the 2014 CFL draft, seventh overall, by the Stampeders, and was later signed to their roster. In his first three seasons in the CFL Smith was primarily utilized as a rotational player on the defensive line. He appeared in 38 games, contributing 26 tackles and eight quarterback sacks. In September 2016 he was suspended for violating the leagues drug policy after testing positive for a banned substance (Methandienone).^[4] Following the 2016 CFL season he was re-signed by the Stampeders in January 2017; about a month before becoming a free agent.^[5] He played in two regular season games in 2017 while spending the rest of the year on the injured list, practice roster, and reserve roster. In 2018, he spent all but one regular season game on the injured list and was on the practice roster for the other. He was on the reserve roster when the Stampeders won the 106th Grey Cup.^[6] He became a free agent when his contract expired on February 12, 2019.^[6]

Toronto Argonauts

On June 30, 2021, Smith signed with the Toronto Argonauts.^[6] He was released near the end of training camp on July 28, 2021.^[7]