For some reason I js now realized why in chapter 29 and during the time seunghyun's brother offered chaejun that scent made him freak. Assuming it was seunghyun's brother who locked chaejun up when he was younger, I'm sure he smelt that same scent on him and possibly lingering in the air the entire time he was waiting to get let out which in the present triggers his ptsd.
For some reason I js now realized why in chapter 29 and during the time seunghyun's brother offered chaejun that scent made him freak. Assuming it was seunghyun's brother who locked chaejun up when he was younger, I'm sure he smelt that same scent on him and possibly lingering in the air the entire time he was waiting to get let out which in the present triggers his ptsd.