Randy Bilesky BScF CPA RPF President at Go Green September 13, 2024 The nasty smell of a deceased rodent is typically caused by the decomposition process. As it’s body breaks down, it releases gases and compounds that produce a foul odor. This smell can be quite intense and pervasive, especially if the rat has been … Continue reading Nasty smell of a deceased rat in your house? What causes the smell and what can be done.