Ethylene and fruits
Bananas are harvested and stored at around 8-9 degrees celsius, with a bright green inner and outer skin. Then, they are gassed with ethylene (aka ethene; C2H4) to signal for them to ripen faster within a (mostly) sealed room. And yes, this gas can cause explosions.
I stumbled upon this phenomenon while watching this video about the banana moving industry. It turns out, ethylene being released by ripening fruits is also why one can encourage fruits to ripen by sealing them within an airtight bag, so that the gas doesn't dissipate. This can be done for other fruits such as apples, peaches, mangoes, pears and tomatoes.