Enviciaste comes from the verb enviciar, meaning 'to addict' or 'to get hooked on something'. It's a strong and evocative word that you don't hear in every song, making it quite memorable.
In
Have you ever been so stuck on someone that even their scent lingers in your room long after they're gone? That's exactly where Jeeiph is in "TU PERFUME"! He's trying to move on, to continue, but he just can't without her. Her memory keeps popping up, and he finds himself wanting to call her again.
He can't forget her mouth, and there's this strange feeling he can't shake. His body needs her, and he admits, "No eres droga pero me enviciaste" [You're not a drug but you got me addicted]. Her perfume is still in his room, and even though she left, she's stuck in his mind. He even confesses that if he said he didn't want her, "era mentira" [it was a lie]. He's holding onto her photo and her name in his notebook, dreaming about her, and even though he tries, he can't find her. It's a relatable feeling of being completely consumed by someone after they've left.