As a noun smell
is a sensation, pleasant or unpleasant, detected by inhaling air (or, the case of water-breathing animals, water) carrying airborne molecules of a substance.
As a verb smell
is to sense a smell or smells.
As an adjective macrosmatic is
having a good sense of smell.
As adjectives the difference between sense and macrosmatic
is that sense
is sensible, rational while macrosmatic
is having a good sense of smell.