A few years ago, even before i know about Pasir Gudang, i went to Punggol for a treasure hunt. Immediately smell something very wrong with the air. And i am the type with a weak sense of smell. Later then i know is because of factory pollution.
Best thing to do is go there and smell the air yourself. Do you believe your own nose or you still believe in NEA? Sometimes Singaporean overly reliant on government, even beyond their common sense.
Sure, 8 km away still can smell pollution. But will you still want to move closer until 1 km away then claim bo bian?
Sometimes i really cannot understand the thinking of some Singaporeans.