This familiar item is from the Star Fox series. Those who have played those games can imagine how this bomb explodes.
Throw the Smart Bomb, Fox!
Don’t get caught in the explosion, Fox!
Hurry, Fox! Run!
This fearsome item practically covers entire stages in a massive, engulfing explosion. It’s best to try to use it in a spot that leaves few places for enemies to flee. Or something like that.
It does seem that they occasionally fail to explode. You might throw it, only to watch it not detonate. In those cases, you’ll want to be careful, because you never know when it might go off.
Speaking of duds, certain Pokémon that explode also sometimes fail to detonate.