Quick Answer. HowStuffWorks explains that food poisoning often occurs when a person eats spoiled food. Common symptoms of food poisoning are stomach pain, diarrhea, nausea, vomiting and cramping.
Confusion continues over coolant colors for cars. Of course, there is still the good old green stuff, but there is also orange, yellow (gold and amber), red, pink, blue and, if you mix the wrong things together, brown. Despite the rainbow of colors, all antifreeze starts out colorless.
typically, the only clear fluid used in a car is brake fluid. Unless you are running straight water in your cooling system and then it would probably have a rust tint to it if it was used without coolant for a long time. If it was brake fluid, your brake light on the dash would eventually come on.