Adulterants are bad chemicals that people might put in food or medicine to make it cheaper or make it seem more powerful, but these chemicals can be very dangerous and make people very sick. So, imagine you have a big bag of candy treats that you love, and somebody tells you they can give you even more candy for a cheaper price! But the problem is, they mix in a bad chemical that looks like candy, but it might make you feel really sick or even hurt you. So it's important to always be careful and check what you're eating or taking to make sure it doesn't have any adulterants inside.