Chem 91 is a popular hybrid bred from unknown parents and descended from the legendary Chemdawg strain. The strain has a dank, earthy smell which, when buds are broken apart, turns harsher and skunkier. When burned, Chem 91 has a particular diesel, chemical flavor. The strain has an initially bracing head high, with pressure behind the temples with a subtle body high that lingers after comedown. Chem 91 is beneficial for stress relief and may be best suited to early evening use.