Check to see if any of your drains have a dry trap. All household drains are equipped with an “S” shaped trap which provides a water seal to keep out sewer gases. If the drain is not frequently used it could be dry due to evaporation. You may also have a loose fitting, break or hole in the vent pipe, items easily fixed with the aid of a plumber.
If you detect sewer odors outside of the home please call the Wastewater Division at 931-553-2424 and they will investigate the odor complaint.