Mercury poisoning.
I would suggest you contact the corporation website or your local McDonalds where you worked.
Mcdonalds:)
depends on what kind of food in mcdonalds
He smells Mcdonalds
trademark
Not all McDonalds' are franchise, but a particular store would be a franchise if it were a corporate named business owned and operated by a private owner or company. For example if I owned the rights to a McDonalds, I would be a franchise owner. I would pay McDonalds a fee for using their name, property, products, etc... The profit from the store I own would be mine and I would control it. But I would effectively be renting the names and logos and services already setup by the McDonalds corporation.
That is highly unlikely as as alcohol poisoning would include an amount of alcohol that would render most people very drunk.
The human would die of heavy metal poisoning. That is if the blood poisoning didn't kill him first.
The conveyor belt of McDonalds would refer to their meat factory where their meats come from. This could refer to an economic term, but is likely regarding production.
Most likely from paint that has a lead content in it. Also, if their feeding or drinking dish was made of pewter they would get lead poisoning.
something Greasy.... McDonalds??