Insane Chem 91 cannabis strain is an Indica dominant hybrid by Insane Seed Posse. It offers two main phenotypes. The first has more chemical aromas, blending fuel with citrus, fruits, and a sweet and sour undertone. The potency is too strong for newbies – its even made some puke. The second is more citrusy with tangy lemons and sweet oranges, with just traces of fuel. Good for evening usage.