Questions & Answers about Najis itu busuk.
In Malay, demonstratives like ini (this) and itu (that) usually come after the noun, not before it.
So:
- najis itu = that excrement / the excrement
- buku ini = this book
- rumah itu = that house
This is normal Malay word order.
It often literally means that, but in real usage it can also make a noun feel specific or definite, so in many contexts najis itu can be understood as the excrement.
That means the sentence could feel like:
- That excrement is smelly
- or The excrement is smelly
Which one sounds better in English depends on context.