It's not die off, candida can eat Fruggliosaccharides and inulin, google it. (At least one species of candida, the most common, can. It accounts for 80% of all candida infections too.)
Gas is a symptom of the FOS. For things that can eat it, It's like sugar. ) There is another test, only 8 lactobacillus out of 30? could process it.