Okay try this experiment.
Stick your index and middle finger slightly into your nostrils. Squeeze the part that separates the nostrils (the two holes)and then take a sniff. What do you smell?
Update: Don't completely close off your nostril, slightly put both your fingers into your nose and only slightly squeeze the separator between the nostrils and take a sniff.
Stick your index and middle finger slightly into your nostrils. Squeeze the part that separates the nostrils (the two holes)and then take a sniff. What do you smell?
Update: Don't completely close off your nostril, slightly put both your fingers into your nose and only slightly squeeze the separator between the nostrils and take a sniff.