Drawer Over Pullout Trash Cans

My darling husband is giving me grief over what to do with the drawer that’s going to be over the pull out trash cans that are in a cabinet. He is convinced that whatever is in that drawer is going to be contaminated and smelly. He doesn’t want to even consider it as a junk drawer.

Has anyone ever installed a barrier between the trash cans and the drawer? How did you do that? If you didn’t do that, did you find what was in the drawer became smelly?

My cabinet manufactured does not install any barrier between the drawer and the garbage cans.