Stinky tofu smells a little funky, but once you take a bite, it’s juicy and savory. Taiwanese stuff definitely stinks more, but the mainland Chinese varieties don’t really stink at all and retain a savory taste.
Natto literally has the smell and slimy, sticky texture of, well, semen. It’s easy to wonder whether someone left a bunch of used tissues out or if they simply forgot to toss out their used natto package.