I am not a chemist but there are many household items that cannot be mixed together. Example: many cleaning ingredients should not be mixed. Vinegar and baking soda, Coke and mentos. My question is, are there other ingredients with hidden effects when mixed that we should know about? I was thinking about all the mixing I did as a kid, with sodas, with powdered drink mixes, with candies and other things we could get our hands on in a home. We drank some things, we dared others to eat or drink things too.  Maybe I'm wings silly but I wonder about if foods are tested for this kind of thing or how I could learn more.