– Fire: Emit only fire. Note that the domain will automatically create some smoke unless you set to zero the parameter ‘Smoke’ in Smoke Flames Tab (see Smoke)
– Smoke: Emit only smoke.
– Fire + Smoke: Emit both fire and smoke.
– Outflow: Remove smoke and fire. (the shape of the outflow will use the object’s bounding box).
– Note the difference between an Outflow and an Obstacle (Collider) :