Radek wants Rodney, but finds the truth the hard way.
Rodney gets temporary "supersmell".
Rodney has muted Superman-like powers.
Mutant!Verse. John has hid his mutation all of his life and then everything changes in an instant.
What it all adds up to is four times John thought he was going to lose Rodney.
John can duplicate himself.
Scroll down for the story chapters. McKay/Sheppard, Beckett/Sheppard, McKay/Beckett > McKay/Sheppard/Beckett. The three of them get transformed into alien hybrids with shapeshifting powers (scroll down for the story chapters)
The team become the Fantastic Four: John = Mr. Fantastic, Rodney = Human Torch, Teyla = Invisible Woman & Ronon = The Thing.