Is the foul odor that appears in the house and on the body, accompanied by bruises on the body and marital disputes, an indication of sorcery or the evil eye?

If there is no apparent ordinary reason for what is happening, it might be sorcery (sihr) or the evil eye (ayn). The treatment for this is through Ruqyah (Islamic exorcism), remembrance of Allah (dhikr), and recitation of the Qur'an, especially Surat Al-Baqarah (The Cow). Indeed, Satan flees from a house in which it is recited, and it is a blessing; taking it (reciting it regularly) expels sorcerers.