You may be hosed. Or not. Let it dry for few days or weeks and it might come back to life.
Disposables with auto switches (vacuums switches) do a fairly good job of protecting the incredibly fragile switches but it can’t be perfect. An auto switch is more or less a tiny tinfoil bag that works on vacuum. Inhale and the bag deflates, the sides touch, and current flows. It’s very sensitive. But if basically anything at all gets IN that bag, including liquid, the sides won’t touch and the switch won’t close. To make it more fun, they’re so small that capillary action will pull stuff into the bag so any liquid near the bag winds up in it. And all it takes is a tiny tiny drop or speck of dust.
Water evaporates but
juice doesn’t. At least not even remotely quickly. If the water didn’t have much of anything in it if it evaporates (and that may take a long time depending on how the thing is protected) the water will evaporate and the bag’s sides will touch again, and you’re in business for a bit longer. It’s kind of a die roll though. A lot of ”empty” disposables actually still have
juice in them. It’s actually X puffs or until the switch dies. Which is a bit random. They really are incredibly fragile.
another option would be to break open the case and attempt to convert it into a button device (this is why button devices exist. Once upon a time all button devices were conversions. They’re massively more reliable. At one time ALL ecigs had vacuum switches, but a few years later almost none did. This is the reason). You’d probably do that with a hammer and soldering iron. Every model has different internals though and randomly fracturing a disposable to convert it strikes me as a low percentage shot. Im sort of surprised more disposables aren’t cut apart and photographed for this very purpose, but there are so many models.
The dirty secret is
juice is pretty cheap compared to how much the things cost. Wasting some is no big deal for them. Just for you, and you don’t know, so you don’t count.