That microwaveable popcorn you bought at the dollar store could be coated in butter and harmful chemicals. A report by Environmental Defence found that at least one in four items at dollar stores in Canada contain substances that are dangerous to the human body. The advocacy group tested products from Dollar Tree and Dollarama, finding lead-laced children's toys and headphones, along with microwave popcorn bags lined with a toxic cocktail of "forever chemicals," known as PFAS, that can leach into the snack.