I had 3 ghostly encounters before, one at Ubin in 1983, one at Tekong (ITD Camp-3) in 1988, one at Sentosa in 1986. Of those three, Sentosa encounter was the one that got me sick for unknown reasons. After going there one night I became unconscious.
I wasted 2 days sleeping (or black out, which I have no idea which is which) on bed, can’t walk properly, but amazing recovered almost instantly after touching down on Singapore mainland (note: There wasn’t a bridge linking mainland to Sentosa back in 1986, can only take ferry).
I wasn’t alone or with just a couple of friends but a bunch of 20+ friends, they all knew my case.Since then, none of us ever walk close to the last 3 chalets Blk-X to Blk-Z (if the chalet since exist now) located remotely near a beach in Sentosa.
Source: Armorboot