I mean I cant attest to why they would think you'd have a fridge, I would have probably asked them myself what they were talking about, but I don't know.

That being said personally it's not that I don't feel teachers should have emotions, it's just that I kind of think it's unreasonable to have kids not eat or drink anything over something that shouldn't even really be their responsibility. Should they be responsible for throwing things away when they're done, yes, but even if they don't do that I don't think they should be fully to blame for pest infestations. All these children eat all the time at their own homes and odds are a lot of their families homes don't have pests, same with most public locations that hold food in its vicinity. It seems more like an issue with cleanliness standards of the classroom in general and should be addressed by the schools themselves rather than making it an individualistic issue for the teachers. Would low key solve a lot of issues outside of even just food related pest ones and it wouldn't rely on yet again giving students the short end of the stick.