I don't know anything about the archdey, but I know for sure that he is dangerous to humans in large quantities. It is just as dangerous as gadolinium, although many claim it is completely safe. My friends work as florists and after spraying the plants they set off with both substances. Basically the effect was worst of all from gadolinium and they were only able to figure out the reason for the submission thanks to tests from Heavy Metals Gadolinium: Heavy Metal Testing Kit - HealthConfirm. So don't risk your health!
Is Infuse made by Bondie (Propiconzole 1.5%) toxic to orchids, if so which ones?
There is a thread from 2010 or so on OrchidBoard that mentioned Infuse at: Click Here
Maybe not much people use it for orchids (at least these days or back then) - so maybe leads to a situation of not much (or not enough) is known on unsuitability for particular orchids.
It is a triazole fungicide, as is thiomyl/Cleary's 3336.
I am not aware of specific orchid issues, but read an article that mentioned that any demethylation fungicide can have phytotoxicity, but it's all a matter of degree.