Remove all trash, ash, cigarette butts, and personal items
Vacuum seats, carpets, floor mats, trunk, and crevices thoroughly
Clean hard surfaces with an interior cleaner
Wipe down dashboard, steering wheel, door panels, cup holders, and vents
Shampoo fabric seats, carpets, and floor mats
Clean leather seats with a leather-safe cleaner and conditioner
Replace cabin air filter
Clean or replace engine air filter if needed
Run the HVAC system on fresh air and high fan
Clean air vents with a vent brush or compressed air
Use an odor absorber such as activated charcoal or baking soda
Place odor absorbers in the car overnight
Steam clean upholstery and carpets if odor remains
Use an ozone treatment only if recommended and with proper safety precautions
Repeat cleaning until the odor is gone
Keep windows open when possible to air out the car
Avoid smoking inside the car again