At around the 24 mins and 15 secs of Season 3, Episode 7, of the TV series Strike Back, Lt Col Philip Locke (portrayed by Robson Greene) says:
If you do find him, approach from downwind. If he sees you first, you've lost him.
Here, because 'him' refers to another human suspect and 'you' to British Army Major Rachel Dalton (portrayed by Rhona Mitra), http://www.oxforddictionaries.com/definition/english/downwind doesn't make sense and is out of context. What does it mean then?