

How else do people blow out birthday candles, and blow up balloons? The air could just escape through the nose!
I think with diving and other situations is to prevent the exposure of the inside of the nose. Especially when jumping in the water and and pressure can be much higher.






YeS, YoUrE rIgHt. aS lOnG aS tHe mEaNiNg iS uNdErStOod, iT dOeS NoT mAtTeR.