Yes, melted aluminum foil in the oven can be hazardous. It can create hot spots, damage oven components, and even release fumes if it comes into contact with heating elements. Always remove foil carefully to avoid tearing and clean spills promptly.
Alternatively, melted foil can pose risks like short-circuiting electrical components or leaving behind stubborn residue. It's best to avoid letting foil touch heating coils or direct flames. If it happens, turn off the oven, let it cool, and gently scrape off any remnants.
Another perspective: If aluminum foil melts onto oven surfaces, it can be difficult to remove and may affect heat distribution. Some worry about potential fumes, though the risk is low unless overheated significantly. To prevent this, use foil safely—never line the bottom of the oven, and keep it away from open flames.
Short answer: It’s not extremely dangerous but can cause damage or minor hazards. Always monitor foil use in the oven and clean up any melted bits to maintain safety.