Probably TMI, but I have a very good sense of smell. I once figured out my coworker was pregnant because she basically smelled the same as a baby's fontanelle (I kept this to myself, I'm not insane).
It's not so much an obvious smell as a perceived "sharpness" that feels related to the sense-modality of smell, but is not exactly equivalent to it. I wonder sometimes if it's a pheromone-based phenomenon.
I can often smell when my wife is in a bad mood (her breath literally smells sour). However, it isn’t a reliable indicator (many false negatives).
As a teen, I once got heckled by some coworkers. "Wow, are you pregnant? Your face is radiating!" I had accidentally put on too much oily sunscreen that day. I'm a cis male with a beard.