Some? Yes. Absolutely. But the point of pscyhosomatic symptoms is that it feels real. That person has become so convinced of something that they truly believe in their symptoms. It's not conscious.
> You cite all this irrelevant stuff about fentanyl,
It's not irrelavent. It shows just how powerful pscyhosomatic symptoms can be.
> Or do you have some actual evidence?
I don't need evidence. Extraordinary claims require extraodinary evidence. There were various claims with Havana Symdrome like "energy weapons". Even the more realistic "unknown substances" still requires something that wouldn't show up when looked for either in the physical presence of supposed victims or in toxicology.
If someone is making the claim that this happened to them, then the onus is on them to produce evidence, not on everyone else to disprove it.
So in the fentanyl case, there is motive to lie about it because it makes their job seem more dangerous than it actually is. The peceived danger of fentanyl is used to justify all sorts of things like questionable searches or even not doing your job (for fear of fentanyl exposure).
Havana Syndrome has similar motive concerns. Compensation, attention, sympathy, that sort of thing.