The Compendium of Caraka 1.5.47

1.5.47

ghrāṇenāsyena kaṇṭhasthe mukhena ghrāṇapo vamet/
āsyena dhūmakavalān piban ghrāṇena nodvamet//

Through the nose; but through the mouth when it is in the throat; one who inhales through the nose should vomit it out through the mouth. / Inhaling mouthfuls of smoke through the mouth, one must not expel it through the nose;