Portland, Oregon, is home to the only museum dedicated to this.
The International Outbreak Museum was started as a hobby by a man named Bill Keene. Bill spent his entire career investigating the source of food-borne outbreaks all over the world.
In 1993, he started collecting momentos of his cases; his idea was that he would display them in a museum setting. Bill collected a homemade can of beets that poisoned the people who made it, milk jugs laced with salmonella, and the final proof of a conspiracy to ship tainted peanut butter.
Some things, like raw meat, are careful reproductions of the originals; but the majority of the items are the original “smoking gun.” Unfortunately, Bill died unexpectedly in 2013. Since then, his colleagues and family have been working to keep the museum going. Their slogan is a quote from Bill himself: “Your diarrhea is our bread and butter.”