Good grief. The guy who authored the Trump dossier was apparently once head of the Russia Desk at MI6.
This means this was probably good quality work.
ps Whenever Trump says "believe me", it's like an involuntary tick which acknowledges the existence of a falsehood - it appears to mean he is lying.
pps "Does anyone really believe that story? I'm also very much of a germophobe by the way, believe me."