What happens next?

How to use an offset smoker
Season the smoker if necessary.
If you're using a new offset smoker, wipe down the entire smoker with soapy water. Rinse the smoker to wash away any dust, grease, or shavings.

Options are: (i). Let the smoker dry and then spritz vegetable oil over the inside of the cooking chamber. Open all of the vents on the smoker and light a fire in the firebox. (ii). Launder the smoker frequently to reduce odors and grease buildup. Keep your smoker dry to prevent mold and debris from starting to grow. (iii). Reheat the smoker if necessary to begin grilling. Make sure that you replace salt and pepper in the smoker before it's heated up. (iv). Dispose of the washed smoker with fresh alcohol if you don't like the smell. Use a specialized smoker cleaning product.
(i).