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Values are represented as mean SEM

Here's a few more BEFORE shots showing the heavy accumulation of smoker's film plus normal dirt and dust build-up on the inside of the windshield Here you can see where I've used my finger to write the words Smoker's Film on the inside of the windshield Here's the greasy finger smears looking at them from the outside

Activated Carbon: Activated carbon filters (also known as activated charcoal) are highly effective because they are very porous and have a large surface areaallowing the filters to absorb gas pollutants, odors, and VOCs

The vapor or smoke in this case is passed through a water basin called shisha and then inhaled through a pipe