Tear Gas Grenade

A grenade that spits out tear gas. Or maybe it's just a fart in a jar. To use it: grab the pin and press the trigger, then throw it immediately (unless you want to cook it, for some reason). It detonates five seconds after you release the pin. The resulting gas cloud is not only difficult to see through, but is impossible for enemies to navigate through. Enemies that are already inside the cloud will use teleportation to escape, instead of getting trapped or something. That just proves that it probably is a fart in a can. Whatever it is, though, dissipates in eight seconds after being released.