Garudapurana 2.15.16

2.15.16

bībhatsaṃ dāruṇaṃ rūpaṃ praṇaiḥ kaṇṭhaṃ samāśritaiḥ /
phenamudgirate kopi mukhaṃ lālākulaṃ bhavet //

[He sees] a loathsome, dreadful form, as his vital breaths lodge in the throat.
One vomits foam, and his mouth becomes filled with saliva.