"Smoke out most Archæans and cover an area with smoke for 10 seconds." — In-game description
The Smoke Grenade is a tech tier 2 gadget featured in Tom Clancy's Rainbow Six Extraction. Once thrown, it will detonate after 2.5 seconds and release a spherical cloud of smoke. The smoke cloud will last ten seconds, blocking all vision through it. It also obscures the vision of any player inside of it.