When people talk about eating more beans, or when people talk about using it as an ingredient, it usually only mean dry beans.
Some humans have methanogens in their gut and these people exhale methane (gut->bloodstream->lungs) and they can emit quite a lot, at least enough to completely fuck up our lab work. Our lead scientist is such a person, and the effect is so bad that he exhales into a bin liner when setting up an experiment.
Or he did: this was so inconvenient that we automated all our instruments, valves, etc so we could run experiments from the kitchen or even at home (lots of RPis which I wouldn’t normally use for anything important). Fortunately this also automated all the data collection.
But now I have to run a trial to see if my diet modulates anal CH4 emissions. Thanks HN!
Cow “farts” (actually rumen belches) are something else entirely.