They do have an odor to them, especially since most people tend to boil them to death but I can think of a hundred things more offensive in a confined space.
I never had an egg that smelled unless it was bad (which too hasn't actually happened to me). My sense of smell is pretty good, I smell all kinds of little things (incidentally, I think that loss of sense of smell can be an early signal for approaching death, if there is no non-deadly cause to explain it).
I read the replies here: https://www.quora.com/Why-do-boiled-eggs-stink-but-scrambled... -- but I've never seen this in five decades of egg eating. I think I would remember a stinking egg (would make me more reluctant to make more for quite some time)? What does "overcook" mean in this context? I've done up to a little under 10 minutes for some larger eggs.
I think there may be something very wrong with the food, and subsequently the bodies, of your mass-incercerated and terribly treated chickens. I did see some funny eggs (inside colors) - that UI refused to eat - in places that bought the cheap mass-produced eggs. My mother also gets eggs with unnaturally deep colors, I think that's something they must have added to the chicken's prison food.
That's an issue I have with discussions - but also with studies - about this or that food, for example "meat is bad", but anything really, tomatoes or potatoes too. Each food type has a vast spread, and everybody just uses the name of the food but people are all talking past one another because they have vastly different actual food in mind.