The survival of all animals and insects, from wolves to bees, depends upon their ability to find the source of odors, which is a challenge when wind disperses and obscures their source. Past research has shown that animals and insects navigate their way to these targets by sensing the intensity of odors and tracking back in the opposite direction of the wind.
Click here for original story, Flies smell the motion of odors and use it to navigate, study finds
Source: Phys.org