Remove all trash, ash, roaches, wrappers, and loose items
Vacuum seats, carpets, floor mats, trunk, and under seats
Remove and wash floor mats
Wipe hard surfaces with an interior cleaner
Clean cup holders, vents, door pockets, and center console
Replace the cabin air filter
Run the fan with fresh air intake
Use an odor absorber like activated charcoal or baking soda
Leave windows open when safe to air out the car
Shampoo fabric seats and carpets
Steam clean upholstery if needed
Clean the headliner gently
Wipe down the steering wheel, dashboard, and door panels
Clean seat belts and fabric surfaces
Use an enzymatic odor remover on fabric areas
Place odor absorbers in the car overnight
Avoid using strong perfumes or sprays to mask the smell
Repeat cleaning if the odor remains
Have the car professionally detailed if needed