Purity: Perfuming the Corpse with Other Fragrances
Practical Laws of Islam as per the teachings of Ayatullah Sistani
Ruling 578:
The recommended precaution is that a corpse should not be perfumed with musk, ambergris (ʿanbar), aloes-wood (ʿūd), and other fragrances, nor should these be mixed with the camphor.
-Ayatullah Sistani, Practical Laws of Islam, Purification (Taharah)