How to Get Rid of Grease Trap Smell: Fix It at the Source
A grease trap smell usually comes from decomposing food solids and fats, oils, and grease inside an overdue, poorly sealed, or inadequately ventilated trap. Remove the accumulated waste mechanically, clean the baffles and lid seal, restore the water barrier, and then use source control or a compatible biological treatment to prevent the odor from returning. […]