My stool has been very sour smelling. i have food intolerances and diverticular disease, but otherwise digestion has been normal, cause?

Change in bowels: Odor, amount, color, frequency of stool varies with foods, speed of emptying of the GI tract, medications & supplements ingested, gut flora (unique for each individual), additives (like blood), subtractions (like absent bile), infection, inflammation, & other factors. If stool pattern has changed, is unusual for you, & the change persists, or is accompanied by other symptoms, see your doctor pls.