Walmart has Tiki Torch replacement wicks.
Get the fiberglass one.
You will have enough for years (if you can find them when needed)
The smoke unit is four parts:
1: circuit board
2: fan housing
3: reservoir for smoke fluid
4: gasket to go between board and two metal parts
Remove the reservoir (one with out the motor).
Remove the casing ( like sausage) from the Tiki wick.
Cut enough fiberglass wick to place inside reservoir.
Install it like ribbon candy looks ,make sure when you reinstall you don’t force it.
I tested mine before I reinstalled it.