If you need to control the odor of intestinal gas temporarily, Pepto-Bismol can be a big help. Don't use it every day.
Some people fight flatulence with activated charcoal, but several other approaches also work quite well: Beano, bitters, Pepto-Bismol or herbs.
A reader who remembers home remedies of long ago wonders what happened to cod liver oil. Although doctors no longer prescribe it, people still take it.