Despite all my physical shortcomings, my sense of smell and taste are close to super-human... I can actually tell when something is done by smell alone more often than not.. and can emphatically tell the difference between apple, potato and onion without smell even.

The down side of all of it is there are many smells which aren't so pleasant that are sometimes very hard to block out. I can usually smell when things are "off" well before they are no longer considered "safe" ... will usually dump out milk, meat, etc days before they're actually expired.

Some things I notice far more than others... I can taste the difference between grass fed, and grain fed beef, I can't tell the difference in bone stock, or in the milk. I can tell the difference in what chickens are fed via eggs (prefer corn fed), but not the meat (usually). I actually love trying just about anything and everything. For the most part the only things I don't care fore are more often about the texture than the taste. I don't care for the texture of raw meat, really fatty food, squash or avocados. I don't mind sushi that's cooked (americanized) or at least torched/seared slightly. But don't care for the really raw/fresh stuff (texture just doesn't appeal to me).

I started getting into cooking a few years ago, and it's amazing how different I feel when I can stick to the stuff I make (not all of it so great for me) vs. even a couple days of fast food or pizza. I wish I could impart what I know/understand now on my 18yo self.