Confused? Can you explain what you mean by your immune system isn't the best?
The ability of a coral to cause damage has nothing to do with your immune system.
I have an auto-immune disease that makes my immune system go berzerk. I don’t have any medical evidence of corals being more harmful with my condition, but I do have hypersensitivity to chemicals and drugs which makes my body over react when exposed to them.
I just don’t want to take the chance to make myself more ill. I’m doing this as a hobby to take my mind off things, not to worry even more.