THE PHILADELPHIA GROUP-Amazing Science Kits: Stink Bombs. Stink bombs can be an effective way to clear a room, they can also make a friend into an enemy and an enemy into a nemesis. With this kit you learn all about stink bombs and get to make a few of your own! This kit contains three packets of liquid solution, three pouches of activation powder, three clear sealable bags, and an instruction sheet. Recommended for ages 8 and up. WARNING: CHOKING HAZARD-Small Parts. Not for children under 3 years. This set contains chemicals that may be harmful if misused. Adult supervision required. Imported.