I wish to reiterate what you may have already heard from your friends and peers: please do not accept any form of food or gifts from strangers outside of the safety of these walls, regardless of how harmless it looks or smells. We have reason to believe that such gifts come with a magical price, and until we determine our exact situation it is (as ever) clever to politely refuse any offerings from strangers.
Stay vigilant and careful as you come and go. I will more than likely redirect your questions to Rogers, Adaar, or the relevant Head of Department. Thank you.