Marson ask somebody to get inside your car and smell the fragrance. Because you may have not noticed the smell in you car changed since you're sitting inside everyday. You're immuned with the smell already. For example on my ride, since day 1 I never put any freshener inside my car. I just have the air ionier inside, everytime a person rides with me (who do not rides everyday in my car), they always have that comment, your car smells brand new. My car will be 4-year old this July.

The most effective would be putting charcoal overnight. If you don't mind, put the charcoal in your car for 1 week, maglagay ka na lang ng net sa ibabaw niya para di kumalat habang nagda-drive ka.