Maybe should invite them down to have a smell test.
If they claim the air quality is as good as other parts of Singapore, how come Yishun and Jalan Teck Whye there are no such smell. The smell is obviously a pollutants of some sort. And if that can be detected by our noses, there maybe enough of it in the air to be detrimental to our health in the long run.
Within WHO and USEPA's guidelines, can also mean very low pollutants level (Very good) or pollutants level at borderline (Long term not so good).
National Environment Agency may have our interest at heart. But better to be safe than sorry. I guess.
Was down today to check on my flat's progress, smell present, smells like wood burning.