Leather is a porous material that will soak up smells it is around. Unfortunately, this includes body odour smells, which can render a leather couch unusable. The first step to removing body odour on your leather couch is to determine whether your couch has finished or unfinished leather. Finished leather is smooth, while unfinished leather has a rough surface. Do not use water or vinegar-based cleaning solutions on unfinished leather.
Sprinkle a thin layer of baking soda on the leather couch. Pay special attention to areas that smell more than other areas. These areas are likely the armrest, the headrests and the couch seat, all of which regularly come into contact with your body.
Leave the baking soda on the couch overnight.
Vacuum the baking soda in the morning with your vacuum's hose attachment.
Smell the couch to determine if it still smells like body odour.
Repeat the process if your couch is made of unfinished leather. Continue to Step 6 if your couch is made of finished leather.
Mix 1 cup water with 1 cup white vinegar. The white vinegar will help neutralise bad odours.
Spray the couch with the vinegar solution.
Immediately wipe the vinegar off with a clean cloth.
Wipe the couch down with a cloth soaked in clear water.
Immediately dry the couch with another clean cloth.