An ozone generator is a device that turns regular are into ozone, which is capable of removing contaminants in the air and has an effect on some sources of odor inside a vehicle. Ozone is dangerous and should be used with caution.
Odor removal might be needed when there is a lingering smell inside a vehicle that can be difficult to remove. Most of the time, this originates from a source that can be difficult to reach and/or clean. Certain tools might be needed to remove the odor completely.