He was a thrall, and before that a mercenary/assassin. I don't care whether bathing was a thing back then or not, he wasn't living in a situation that lent itself to modern hygienic standards, which was my point.
Yeah you did
Thorfinn was a kid driven by revenge after what happened to his father. After that situation "resolved" itself, he found himself forced into thralldom and was humbled and forced to grow up pretty fast. He came out the other side as a very altruistic person who struggled with his past and a renewed desire to find a safe home for his people and the common man. He's as physically capable as anyone else, but his conviction of character is what makes him the most appealing IMO. He doesn't exist in some hackneyed love story we've seen 100x over in manga, he exists in a very real story about real world struggle.