No! Scratched enamel cookware can leach toxic chemicals into your food if it's used to cook acidic foods like tomatoes or lemon juice. A scratched enamel surface has microscopic holes where food particles can get trapped, which creates pockets where bacteria can grow. Over time, these scratches can become larger and deeper causing more damage to your pan's surface and allowing harmful substances to enter your food while cooking. There have been many studies done on this topic, so you may have seen this information floating around the internet recently (like here).