YSK if your flatulence sometimes smells exceptionally foul, you may have lactose intolerance (or other food sensitivities)
from /r/YouShouldKnow
YSK 嘔吐物が異常に臭うことがあるなら、乳糖不耐症(または他の食物過敏症)かもしれません。
YSK 嘔吐物が異常に臭うことがあるなら、乳糖不耐症(または他の食物過敏症)かもしれません。
YSK if your flatulence sometimes smells exceptionally foul, you may have lactose intolerance (or other food sensitivities)
from /r/YouShouldKnow