A foul stench wafted from the walls of King's Landing.
It's the odor of half a million people piled up without a sewage system.
Calling it a biochemical weapon is unnecessary; Lann could sharply sense these smells, but whether it's a Demon Hunter or an Interstellar Warrior, they are human-enhanced units specialized for combat.
Demon Hunters often face creatures living in trash or excrement, and Interstellar Warriors can even breathe most gases in the universe directly with their bodies.
The smell could affect their mood, but to say it affects their physiological reactions... that's truly impossible.
"King's Landing has been like this since shortly after it was built, but don't worry. We'll be staying in the Red Castle, which is on a hill, so the stink can't reach such heights. In King's Landing, if you want to live well, you must buy property at higher elevations."
Lann was now riding alongside Edd, with the Duke of the North explaining the capital to the young man.