The Compendium of Caraka 6.23.142

6.23.142

kīṭairdūṣīviṣairdaṣṭaṃ liṅgaṃ prāṇaharaṃ śṛṇu/
sarpadaṣṭe yathā śotho vardhate sogragandhyasṛk//

Hear the lethal signs of being bitten by insects with slow poison: / as in a snakebite, swelling increases, with foul-smelling blood;