Firstly, I am not trying to swim this is actually about a friend. A month ago he sniffed 2cb (10mg) and done 75 mg MDMA oral. Since then he has been having severe derealisation and panic attacks. He has been dignosed with a panic disorder. He still thinks there is some of the drugs he did is in his nose. He suspects it is binders. He says when he sniffs his nose to try get it out he experiences vasoconstriction. I have tried telling him it is not active but he still believes it is.