I noticed one thing in common for Korean: they brush their teeth all the time, be it women or men. It's amazing to note how they carry their toothbrush everywhere they go: office, handbags, subway, bus, restaurant, you name it.
I guess it's a courtesy for them to smell refreshing all the time. That's a small culture reference I have found facinating in them.
Maybe Malaysian need to practise this?
Not a chance.