Aromatic herbs cover or alter the stench of decomposition; use of them in a burial suggest those doing the burying were familiar with this, iow, had buried their dead before. For that matter, they may have needed to do this because they continued to live at the site, a practice found in Sumerian sites from thousands of years later.
Thank you, SunkenCiv, your input is always valuable knowledge.
To think, a need to ‘perfume’ the graves in order to better the neighborhood...