the petrochemical factories in pasir gudang operate 24hr a day but whether u smell the toxic depends on wind direction. The 2 years i lived in punggol, i sense the crap in the air 80% of the time usually in evenings n nite. I often travel to pasir ris n sk and also detect the same smell. My advise to u is to take a drive to punggol jetty one nite and recognise that smell. U will be shockd that the same smell can be detected in PR and even in Sembawang. Air pollutn like ths is no jokng matter. Health problems wont cme immediately but just a matter of timeOriginally Posted by UnregĄstered