Face swapping will usually make you look a little freakish, but normally you don't become a bodiless ghost. Unless you're vaping whilst face swapping, in which case...BOO!
A strange paranormal phenomenon was discovered and there's video evidence of it from YouTube user Dorrit Shank, who recorded herself face swapping with a male friend while he vapes. OK, it's more like a malfunction of the app than a visit from the underworld. But it's still pretty creepy when her face rises with the smoke and floats around like a ghost. It's vaguely reminiscent of the smiling Cheshire Cat from Alice in Wonderland.