VHawk,
I hope you don't take my comments as a debate on bacteria and diseases because you probably know more about that than me.
I am just stating facts from experience.
I believe that most natural/normal air born bacteria are not a big threat to human health.
I can't prove this but you have to admit that people from third world countries do not have the essentials to keep meat/fish fresh compared to us. If your theory is correct, then how come Chinese, India, and most countries from the Eastern hemisphere have a huge population? We would think these people had became extinct due to their eating habits. Here are a few examples of bacteria tanted products: Kim Chee, Fermented fish, fermented squid, fermented crab, fermented shrimp, fish sauce, shrimp paste, 1000 Year Old Eggs, sun dried fish, sun dried squid, sun dried shrimp, and much much more.

Yes you are right about the Jack in the box, and such. And those illustrations were the cause of PRODUCTION GOODs.

Something to think about.