Everybody loves some fresh watermelon in the Summer, but if the watermelon has gotten too hot, they're saying it could be very dangerous.
You see that heat can make the inside of the watermelon ferment. A watermelon that is fermenting is a perfect place for toxic bacteria to grow. Pathogens like botulism, E. coli and Salmonella.
A fermenting watermelon will be foaming as you'll see in the video below. If you buy a watermelon, be careful, keep it stored in a cool place!