Is there a way to reduce really bad flatulence?

Depends on the cause: Some causes of flatulence, such as swallowing air, is only gotten rid of by either changing how we eat to avoid swallowing air, or by passing it. Other causes include lactose intolerance so one must avoid milk products. I have had some success in recommending eating raw, fresh parsley as a means of reducing the flatulence. Parsley pills did not seem to be as effective. "beano" also works.