Bukhur stick or Agarbatti or incense stick for fragrance, used geometry node to enable and disable the burning of the stick. You can choose two different smoke black and white with different pattern using geometry node by changing value between 1 and 2 . empty used to transform the UV of the stick, so we can use multiple stick without repeating same pattern in it. check "Bukhur" object for geometry node. for more detail watch this video "https://x.com/im_do_b/status/1744719176990962165?s=20"