is it safe to stay in a house with a sewage backup 12

https://blast-wiki.win/index.php/Sewer_Backup_Safety:_What_You_Need_to_Know_After_a_Sewage_Spill

A sewage backup in your home is a serious health hazard due to bacteria, viruses, and parasites in the waste. The smell alone can cause nausea, but the bigger risk is airborne pathogens and contaminated surfaces. It's generally not safe to stay, especially if the backup is extensive or involves black water from toilets. You'd be breathing in harmful particles and touching affected areas. Professional cleanup and disinfection is strongly advised before reoccupying the space.