Corrected entry: When they're being chased by the dogs, Illya pulls off Ursula Baldwin's shoes so she can climb the tree. He tosses the shoes into the pool below. But in the next shot, as Ursula begins to climb, her shoes are back on her feet - that is, until they both leap from the tree into the pool. Then, her shoes are off again, and already floating in the water. (00:42:15)
The Foxes and Hounds Affair - S2-E4
Corrected entry: Professor Stemmler tells Solo that the hypodermic he's just been injected with contained water rather than the Minus-X drug. He'd have been better off with the drug, or at least a nice, blood-friendly saline solution. An injection of plain water can cause haemolysis (cell membrane rupture), which could be lethal. Absolutely not an urban myth. Professor Stemmler should know better.
Correction: There's nothing in the scene to infer Stemmler was talking about "plain" water. Given Solo's lack of medical expertise, it would be easier to say "water" than "saline solution" (which is still water).
Correction: After replaying the scene many times I am sorry to say that even if Kuryakin mentioned her removing shoes (and even grabbed her right leg in an apparent removal attempt) it is not seen that he throw her shoes into the pool, nor that she actually removed her shoes. So understandably she is seen climbing the tree and completing the scene with her shoes on.