I have psoriasis in my scalp, but my religion requires I always have a head covering.  The odor is unbearable, my children who are close all the time always make a gagging  reaction, it smells like a decaying body.  I tend to pick at the scales, and its sticky, causing the odor.
Hello and welcome to Chat Doctor Scalp Psoriasis presents as well-defined, thick scaly plaques. There can be secondary bacteria infection of the plaques, thus giving rise to oozing and crusting and foul smell. If I was the treating doctor I would suggest you to wash your scalp at least thrice weekly with coal tar+salicylic acid based shampoo(Honeypot shampoo). A course of an oral antibacterial e.g. Cephalexin Or CEA Chat Doctor.