I'm a bit skeptical about the claim in this poster:
Studies show that sandwiches actually taste better when other people make them for you. When we make food, we get desensitized to the smell.
It's apparently fairly widespread. The New York Times and Forbes are at least two sites mentioning this. Forbes links to two relevant studies; one is behind a paywall and the other (which seems to have contained the answer) leads to a 404.
Does food taste better when someone else makes it?