Jet Fuel Gelato x Sour Gelato Get ready for liftoff. Petrol Rainbow is heavy on the funk with notes of gas from the Jet Fuel Gelato. The grow team here at Malek’s nicknamed this one "the Dirty Diaper Pheno,” and if you've ever changed a baby's diaper, you'll get why. The gassy, burnt rubber aromas on this strain are super pungent and can’t be contained, stinking up the entire room when you open the bag.