Brian revealed Yoo Jae Suk has the worst smelling feet.

On the January 4th episode of 'Jaefriends', Brian featured as guest and opened up about his obsession with cleaning and hygiene. When host Jaejoong began cooking for him, Brian shared, "I quit cooking. I don't. Cooking makes me have more things to clean. When I cook, I have a lot to wash, and when I use oil to fry, I have to clean everything."

Jaejoong also asked Brian which celebrity's smell he remembers the most, and he responded, "In the past, I was filming 'Star Survival', and I was sitting next to Yoo Jae Suk. The smell of his feet at the time, wow. It was too much. Sorry, Jae Suk hyung. I don't know what they're like now though. Back then, I was like, 'I hope Jae Suk doesn't come to my house.' His feet smelled really bad then."

Watch the full episode of 'Jaefriends' above, and make sure to turn on the English captions.