Commentaire sur La Genèse 27:26

"And kiss me". And he did not say "And I will kiss you". Kissing always depends on the greater party who kisses someone of lesser status. When they are equal each one kisses his fellow as in "And each man kissed his friend". Rather he said so (kiss me) because Yitzchak could not see Yaakov and was not able to kiss only to feel. Therefore he told his son to kiss him.

גשה נא ושקה לי בני, “come closer please and kiss me, my son.” Yitzchok was confused seeing that on the one hand, the voice of the person serving him sounded like that of Yaakov, whereas his skin felt like that of Esau. By making a third test, the fragrance of his clothing, something that could not be determined unless the person came very close to him, Yitzchok meant to decide who this person was. When he smelled the familiar fragrance of Esau’s clothes, he conferred the blessing having been convinced that Esau was in front of him.