Yup, the smoke has the best chance of feeling natural. Literally minutes before this moment they already use the toxic gas to their advantage to do a surprise attack.

You might even be able to create the impression that they escaped above/below by leaving a circular lightsaber mark behind - a la Ahsoka and Rex Order 66 or the deleted scene from ROTS when Anakin and Obi-Wan do this move to escape Grievous.

If this could be fixed that would be awesome. Literally no other form of Star Wars media has used this ability since 1999, from what I know.