Medusa Backflow Insence Burner

Medusa bust backflow incense burner is both a decorative piece and a functional incense burner. The smoke from a specially made backflow cone travels downward, often appearing to pour from Medusa’s mouth like a smoky waterfall.
Spiritual symbolism of Medusa
If you're interested in the spiritual meaning, Medusa can symbolize:
Protection — her frightening gaze has traditionally been interpreted as a guardian against danger or unwanted forces.
Warding off negativity — a modern spiritual interpretation is using Medusa imagery as a protective presence in the home. 
Transformation — Medusa's story can represent moving through trauma, betrayal, or hardship and emerging stronger.
Feminine power — she can represent independence, strength, boundaries, and reclaiming personal power.
Facing fear — her image can symbolize confronting what frightens you rather than allowing it to control you.
When the smoke flows from her mouth
Symbolically, you could view the descending smoke as releasing negativity, old emotions, or energy from your space. That's a spiritual interpretation rather than something scientifically established.
For the actual waterfall effect, make sure you use backflow cones, not ordinary incense cones, and keep the burner away from drafts.