Wow, bumping this because it's fascinating.
I know exactly what
@Marlène means about sandwich bars being gross. Meat and cheese that are fresh and high-quality smell quite good to me (you know, in a... food way) but low quality meat and cheese that's been left to sit out smells chemical-y and unpleasant to me. It's hard for me to imagine anyone being drawn in by that smell.
My sense of smell and actually hearing has always been insane. My students would whisper at the back of the room, "...do you think she means the hydrogen?" and I'd say, "No, Norah, I mean the oxygen atom, here" and they'd always be all DO YOU HAVE SUPERPOWERS, which was fun. Although maybe that's a teacher thing, and being required by law to have Eyes in the Back of Your Head.
Still, my sense of taste and hearing is NOTHING compared to what some of you guys are talking about. I can tell far earlier than other people if food is going bad, and can't understand how they can't taste/smell it, themselves, but I can't smell dog pee after the rain! Cigarette smoke seems to be what I'm most sensitive to. Once I was
driving on a highway and someone drove past us and I coughed. "Geez, I wish they'd do that with their windows closed." My friend said, "they
did have their windows closed," and I replied, "well they're
smoking." Which I guess anyone should be allowed to do in their own car with their own windows closed! It was surreal. They got off ahead of us at our exit and I could see that they were, in fact, holding a cigarette, so it wasn't, you know, a
stroke.
Man, the fake-flowers laundry + B.O. still present is absolutely
awful. I share a laundry room with my cousin's family that lives across the way, and needless to say they don't use the scentless stuff, and the laundry machine doesn't really work all that well (I actually use my mom's laundry room, across the way in the other direction.) So my apartment is directly above the laundry room, and when they do laundry that B.O. + overwhelming floweriness is so strong that I can barely stay at home when it's their laundry day.
Overall I, like my students, consider it a mini-superpower, but there are times when it actually becomes a real pain.
-J