When the plane landed, the passengers waited in the departure lounge to go through customs. It was there that Gunther saw his chance. He waited until no-one was looking, and swapped bags with Dani. Now if news of the theft had been reported, Dani would take the rap. If not, he would retreve his own bag from Dani and apologise about the mix-up.
Dani cleared customs and went straight up to his hotel. Opening his bag, he discovered he had gotten the wrong bag. He was about to contact reception when he saw the spray.
*I'm sure the owner won't mind if I try it on myself* he thought and sprayed himself with the nanobite spray. Then he settled back and decided to watch TV until dinnertime, not knowing that his choice of veiwing would activate the nanobots inside him - or Gunther was heading for his room!