Question

how do we come to know the super sense of smelling of dogs​

Answer 1

Answer:

We can't wiggle our nostrils independently. Dogs can. This, along with the fact that the so-called aerodynamic reach of each of their nostrils is smaller than the distance between the nostrils, helps them to determine which nostril an odor arrived in.

Answer 2

We can't wiggle our nostrils independently. Dogs can. This, along with the fact that the so-called aerodynamic reach of each of their nostrils is smaller than the distance between the nostrils (see Figure 3), helps them to determine which nostril an odor arrived in.