Apastambasmriti 9.9

9.9

yadveṣṭitaṃ kālavalākacillairamedhyaliptañca bhaveccharīram
śrotre mukhe ca praviśecca samyaksnānena lepopahatasya śuddhiḥ

If the body should be enveloped by crows, herons, or kites, and smeared with impure matter, / and it should enter into the ears and the mouth, purification of the one defiled by smearing is achieved through a thorough bath.