Drawer and base smell

Anyone else have issues with the drawer and base of the robot smelling? I always use bags in the drawer and will clean it with an enzyme foam spray to get rid of the smell, which works. However, how do you clean the inside base where all the electric components are? I’ve tried spraying the foam cleaner on a paper towel and then smearing it, but it doesn’t seem to work. Is the base smelling a common issue?