What causes the HORRIBLE death-smelling farts after a cheat meal?

if you're cutting, you're likely eating the same foods over and over. your body adapts to this, namely, your gut flora - the microorganisms that flourish on the foods you're now eating take over and your body becomes really, really efficient and digesting those foods, but much less at digesting others

when you're just eating whatever, your gut flora is more diverse and can basically handle anything (albeit less efficiently than when it is "cultivated" on a restricted diet.)

this is also why you might get constipated for the first few weeks during a major diet change - your gut flora needs time to adapt

>>42816019
Yea during the week I usually eat only 30-40 grams of carbs pre workout, and at least 160 grams of protein. I guess intaking 500 grams of carbs in one day can upset my gut bacteria a bit.

I ate an entire box of Fiber One bars yesterday. I've been farting every few minutes since. Last night I farted so loud I woke myself up multiple times. It's been glorious.