I’ve been looking around for some thoughts on the flatulence issue as well. I ran a search and only found one primary thread on the farting issue - The (Un-)Official Fart Thread - but the thread has been abandoned for the past year (since Jan '15).
My ass is practically a leaking air compressor. Seriously. I could probably run my car on it (if it weren’t electric, bah).
It’s humiliating around coworkers. Simethicone is completely ineffective. I tend to mix Soylent (1.5) with my traditional diet of “seriously awful things” (fast food, junk food, etc; I got onto Soylent after acknowledging my bad diet but not being interested in any “healthier” foods). I’d say it’s about 40-50% of my diet right now. Some days as low as 1 meal (20-25%) and some as much as 3 meals (surrounded by snacks). It’s been about, maybe, 3 months since I started with Soylent, too. But the latest batch seems to provide the worst of the gas.
Never any stomach pains or discomfort (except the somewhat bloated feeling), but just… constant… day and night… trumpets. I think my nose has even become a bit desensitized to it, which is even more humiliating (I know THEY can smell that nastiness!). And it’s a horrible “advertisement” to Soylent since coworkers are fairly well aware of the correlation between “I get the Soylent out of the office fridge and pour a serving of it” and “that smell, oh god”.