There was an American couple who in the last year or so were poisoned by just such an incident. The hotel was using a toxic pesticide that is banned in the US. I think one or two family members died. Then there’s always the toxic bootleg liquor passed off as top shelf!
Travelers beware!
I remember the case you are talking about It happened in the Virgin Islands. The father and his 2 sons suffered neurological problems. From the picture in the article it looks like they are now in wheel chairs.