One Possible Source of indoor air pollution is gasoline engine of motor vehicle. High cerbon mo¬noxide (CO) concentration raises the Ievel of CO Hb in the blood, thus causing health disruption ranging from headache to death. One of the efforts which can be applied to Cope the problem is utilizing CO absorber plants such as yellow palm (Chrysalidocarpus lutescens), suji leaves (Dcacena deromens…