Nested Module Layouts

I am missing something really basic here and I am going to blame it on the cold medications …

I have an app with multiple modules. The parent application has a defined layout and then the module is to render within that layout. The issue I am running into is that module view has some module specific CSS that I need to include in the header, but the header is part of the parent applications layout.

Does this make sense at all and is there a way to have the module view, wrapped in the module layout, wrapped in the parent application layout?

– Jeff