Remove all trash, food, drinks, and damp items
Vacuum seats, carpets, floor mats, and trunk thoroughly
Take out and wash floor mats
Wipe down hard surfaces with an interior cleaner
Clean cup holders, vents, door pockets, and under seats
Check for and remove moldy or wet items
Dry any wet carpets or upholstery completely
Replace the cabin air filter
Run the heater and air conditioning to dry the system
Open windows and doors to air out the car
Use baking soda on carpets and seats, then vacuum it up
Use activated charcoal or odor absorbers inside the car
Steam clean upholstery and carpets if needed
Clean or replace any dirty air vents
Check for leaks, spills, or hidden moisture sources
Use an enzyme cleaner on organic spills or pet odors
Avoid masking odors with heavy air fresheners
Keep the car clean and dry to prevent the smell from returning