A sewage backup in your home is not just gross—it can be a serious health hazard. Raw sewage contains bacteria, viruses, and parasites that can cause diseases like hepatitis and gastroenteritis. The smell alone indicates harmful gases like methane and hydrogen sulfide, which are toxic in high amounts. Plus, the moisture can lead to mold growth within 24-48 hours, which triggers allergies and respiratory issues. Unless the affected area is fully sealed off and you have professional cleanup equip… is it safe to stay in a house with a sewage backup 38