minecraft-assets/assets/minecraft/models/block/smoker.json

{
  "parent": "minecraft:block/orientable_with_bottom",
  "textures": {
    "bottom": "minecraft:block/smoker_bottom",
    "front": "minecraft:block/smoker_front",
    "side": "minecraft:block/smoker_side",
    "top": "minecraft:block/smoker_top"
  }
}