Not a single food, ever. Nor smells, besides the smell of burning DMT as I rode past a row of plants on my bike.
People always talk about how strongly scent and taste are linked to memory and I can never relate. Then again, I've never had a strong memory.
I'm not sure where you live, but our XYZ (USPS, Amazon, UPS) drivers almost never knock or ring the bell. FedEx is the only one that does, and they don't come very often. Maybe all the drivers know our house and don't want to hear the dogs. Honestly it's appreciated, I don't care to answer the door without prior notice, doubly so if no one is actually there when I do.
USPS drivers just want to get done for the day and go home, but Amazon (definitely) and UPS (I think) get docked for taking over X time per delivery. If someone comes to the door to talk to you and ask you something, that could really mess with your times.