The smell of these chronic leaves make me hella demonic

from Eminem – I'm Having a Relapse Lyrics on Rap Genius

Reference to Eminem’s drug-problem period, when he used a lot of drugs for stress relief.
Including one of his interview Em said, that he used a lot of Xanax, Valium, Vicodin for treating anxiety, insomnia, seizures…
A many Rappers, in situations like this, always smoke chronic (weed).
But it’s not for Eminem, because he doesn’t love smell of chronic. That’s why he used Valium and Xanax (and other).

Or… Maybe during his drug rehabilitation period Eminem also smoked chronic, what made him insane.

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