You can buy packs, and there might be some CC0 ones. But yeah exploding things, though it can be a paper bag being inflated and popped. Different explosions sound different and you can layer effects, alter volumes, boost bass and whatever else to make things up. Because Hollywood most think explosions sound the same, and look like a giant fireball, petrol based, despite most real world explosions not having that.
Explosions are loud so you need to find a way and a microphone so no clipping, and you also want to mix the sound in the product such that people don't appear to be at normal volume talking and then the same volume (which in reality is the max to begin with) is an explosion. There are also some further tricks some employ beyond simple silence before like a gradual ramp of a low sound, or ringing afterwards.
Only a problem when "Any 1 subsample contains 90 or more insect fragments"? https://www.fda.gov/food/ingredients-additives-gras-packaging-guidance-documents-regulatory-information/food-defect-levels-handbook
