I’m super old, and I’ve never forgotten to flush at someone else’s house or a public one. In fact, I often have to flush someone else’s turds.
And people actually tell me my house smells good, so I’m pretty sure I’m not noseblind to urine. If it were potent enough to smell, then I’d either have to drink more water or consult a medical professional lol
I’m pretty sure it’s because I burn incense, clean my house regularly, and the diluted urine that is literally encased in water has no impact on the smell whatsoever