Possible zoa poisoning

[Proteus]

I'm not doubting you at all. I have handled lots of corals bare hands without issue. To me it's like peanut butter. Some people are affected some not.
In my other hobby (horticulture) there's a product called neem oil. Completely natural aids in eraticating spider mites. For years I used this product with no affect but now I have to where a filter mask and have lots of ventilation or no more breathing.

I think that some things affect people in different ways and your body can change to particular substances