could be true for some.
one class I was in, one of two terps was eating a yogurt on a break. I didn't see it at first as was sitting way in back of classroom and focused on some papers, just right after I looked up to confirm what I was smelling she had already put it away so I asked,
were you just eating a yogurt? she caught off guard astonishingly said
omg, how did you know..?
I didn't know what to say lol, just said I thought I smelled it. then she joked that I followed her from her home so I saw it before and asked me
what kind it was...
strawberry I giggled! lmao.. told me I have
a smell sense of a shark! (sharks can smell prior to three miles underwater). I have had plenty of people rosing their eyebrow at my strong sense of smell - many could not smell what I smelled. even in distances too.
so I agree especially with jillio's first post and others - I believe that goes the same for our eyes. we've lived our lives with our eyes, smell and sensation. practices to perfection! go us!