91 Chem Dog boasts a distinctive aroma that blends pungent, diesel-like notes with a sharp, spicy undertone. Its scent is often described as earthy with a hint of skunky sweetness. Visually, the strain typically presents dense, compact buds that are covered in a thick layer of frosty trichomes. The leaves are usually a deep, rich green with occasional flashes of purple, and the overall appearance is rugged yet striking, with an almost oily sheen from the abundant resin.