Is it normal to fart in Japan?
Yep.Totally normal
Yes—people fart in Japan just like people do everywhere. It’s a normal body function, though most people try to be discreet in public, as they would in many places.
Your digestive system didn’t get a different rulebook when you landed in Japan. Farting happens to everybody, and an accidental one isn’t a big deal.
As in many countries, people generally try to let one go privately or quietly in shared spaces. If it happens, a quick “excuse me” is plenty; no dramatic apology required.