Put Olive oil on it every day for 3 days, and the smell should leave.
Vinegar
Take it for dry cleaning...
spray
Yes, mothballs contain naphthalene, which is a poison if inhaled.
strong aromatic odour
By purchasing a car with cloth seats.
Lime neutralizes just about anything, but mothballs should not be under your deck.
In a recent Mythbusters, it was determined to be "plausible" that mothballs can actually increase your car's mileage. If mothballs were placed in your gas tank, I suspect you would smell the scent mothballs as they dissolved and then burned. It doesn't sound like mothballs would "spike" your tank. How can you tell if your tank has been spiked? If you cannot tell, it probably doesn't matter.
The smell
Mothballs could create some of the odor.
The smell of mothballs can be difficult to get rid of but heating up the area for a few hours to release odors, then airing out the area is one way that can help. Cleaning the area with vinegar and baking soda and using charcoal to help absorb the smell are other ways to rid your home of the smell.
you get water or olive oil and a cup with hot water in it .put the leather belt in there and wait 15 or 20 min then smell it