Our youngest is 15, so I'm a few years out of date on baby bottles and formula. But when we quit using bottles, we were putting the formula into little plastic bag liners in the bottle. How hard would it be to put the explosives liquid into a sealed bag, put it in the bottle, and then pour ordinary formula over the sealed bag? They you could easily pass the taste test and still have your explosive "meal" inside the bottle.
I've thought for several years now that such false bottoms in many ordinary containers, such as shaving cream cans, could be used to smuggle explosives onto aircraft.
Anyone want to hear where this is going? Not long from now terroists will have surgically inserted explosives in their bodies. God only knows that we can create devices to detect or detonate them in time. I really suspect that they already are doing this. Even my weak mind could see that coming.