McDonald’s isn’t gourmet but poison is a huge stretch
IDK, I remember seeing a post a few years back of someone who left a McDonalds cheeseburger and fries out to see how long it would take to spoil. IIRC the damn things went on close to a decade without a single bit of decomposition. While that may not be directly poison per se, that amount of preservatives and chemicals can’t be good for the human body.
It’s not 'chemicals", it’s grease. The frying process removes almost all the water in a McDonald’s burger.
That doesn’t explain the untarnished bun.