Smelling plastic for a long time can be extremely harmful to the body because plastic contains very many harmful ingredients. Because of the presence of many heavy metal chemicals, such as benzene, formaldehyde, and even lead. These harmful chemicals can cause the body’s immune system to decline, causing the possibility of blood system diseases, such as aplastic anemia, leukemia. Because of the smell produced by plastic, these harmful chemical molecules are dispersed to the human lungs through the air, and the human body is prone to cancer when inhaling these harmful molecules into the body. So stay away from such a work environment or living environment.