Were you at my house
you'd be living in a tent in the back yard until the gas passed. In my family it was the height of inappropriateness to belch or fart in public. You did those things in private.
I found out who told me about how to prevent gas with beans; it was on another site I visit every day. The preventative is to cook potatoes in the beans. Another person (Greek) on that site said that all their lentil recipes had potatoes with them and they never had trouble with gas. Greeks are smarter than us, I guess!