Adding moisture to clothes in a hot dryer can indeed make the laundry smell worse. When moisture is added to clothes that are already hot, it creates a damp and warm environment, which can promote the growth of bacteria and mold. These microorganisms thrive in such conditions and can lead to unpleasant odors on your laundry.
Furthermore, if the dryer isn't adequately ventilated, the moisture can become trapped inside, creating a breeding ground for odors. The combination of heat, moisture, and lack of airflow can cause a musty or sour smell to develop on the clothes.
To prevent this issue, it's essential to ensure that your dryer is well-ventilated and that you're not overloading it with too many wet clothes. Additionally, make sure to remove your clothes from the dryer promptly after the cycle is complete to prevent them from sitting in a warm, damp environment for an extended period.
If you notice persistent bad smells on your laundry despite taking precautions, it may be helpful to clean the dryer drum and lint filter regularly and occasionally leave the dryer door open when not in use to allow proper airflow and reduce moisture buildup.