In a traditional home lavatory or bathroom, ovens are not typically used at all. Lavatories are intended for personal hygiene purposes such as washing hands, brushing teeth, taking showers or baths, and using the toilet. Ovens are kitchen appliances designed for baking, roasting, and cooking food, and they have no place or function in a bathroom setting.
However, in some specific and unusual scenarios, ovens might be found in areas adjacent to bathrooms or lavatories if there are shared spaces like communal kitchens or utility rooms. These areas are usually separate from the bathroom and are designed for general cooking and food preparation.
It's important to note that safety regulations and common sense dictate that ovens and other cooking appliances should never be installed or used inside the actual bathroom space. Bathrooms have different safety requirements and are not appropriate locations for any cooking equipment.