"What a nice gift! You're lucky. Someone wanted you to be warm when it was cold." Mahdi's warmth is of the nearly unbelievably sincere variety: he's genuinely touched by the scenario he's imagined, someone giving this tall British guy a scarf because it might be cold. The thought of it inspires him, brings him genuine joy.

Mahdi seems a bit confused when Sherlock asks him if he can help, and he blinks a moment as he lets his mind catch up to the situation. "No, I'm fine. I guess the scarf's kind of a weird thing to ask about, but I'm not really used to so much weather and I get cold, and it just sort of came to me like, oh yeah, I could use a scarf like that!" He shrugs, and then looks a bit embarrassed. "I'm so sorry. I should be asking you if I can help you! I've been here since August! Do you have any questions about this place?"

Aside from the smell of flour, there were notes of vanilla, chocolate and brown sugar. He'd been making cookies before he arrived.