We lost several hundred dollars worth of coral and fish in our reef aquarium when a house guest, after being told explicitly not to, used body spray stuffs two or three rooms over in a large house. These things are _sensitive_.
I have to ask: How did you trace cause to effect and eliminate other possible culprits?
It has happened before when our kids were younger and discovered perfume. These things don't mix well with reef aquariums. The rule stands at our house: no spraying anything that you are not 100% sure is reef-safe safe to spray.