Smart Bomb (Nintendo Comics System)
The Smart Bombs act as a counterpart to the titular Stupid Bombs, likely as a countermeasure or contingency in the event the Stupid Bombs backfired on them. They release an intelligence-raising gas when detonated.
Shortly after a Snifit reported to King Koopa that several of his Shy Guys had set off Stupid Bombs and rendered themselves dunces, the King shows him a cache of Smart Bombs, explaining their purpose and his plan to counteract the Stupid Bombs affecting his soldiers. The curious Snifit grabs a Smart Bomb, which goes off in his hands, and breathes in the fumes; he becomes superintelligent, and sends King Koopa down to Fryguy Kindergarten before trying in vain to re-train the Shy Guy soldiers.