Dobbins is the most notable player of this group. The Patriots brought him in for a workout a few weeks, but nothing ever came of the visit.
Dobbins, 31, signed with the Falcons after they sustained some injuries during training camp, but he was ultimately released as they trimmed their roster down to 53 players.
Before that, Dobbins played for the Texans after signing a one-year contract with the team last April. However, he lasted only until October before being released.
Smith, 22, was the Cowboys seventh-round selection this past May, but he has already been cut and released from their practice squad.
Smith played just two years of college football at Texas Tech. He totaled 175 tackles, 12 tackles for a loss, 4.5 sacks and two pass defenses during this time.