Some of this harmful objects can damage the lungs kidney most especially smoke from all this big engine's the break and block industry I
Engine is very effective to man kind even the chemical we used in the some of them follow the crop and the courses problem to our body due all this chemical people eat good food still test and get them with different sickness so we should be very mindful there are somethings that they are good but at the end very dangerous so we have to also take good care of our body too