3. Unpleasant or Sour Smell
What It Smells Like : A sour, fermented, or off-putting odor when you cut into the watermelon.
Why It’s Dangerous : A foul smell indicates fermentation or spoilage caused by bacteria breaking down the sugars in the fruit.
What to Do : If the watermelon smells bad, don’t taste it—discard it immediately. Spoiled fruit can cause food poisoning.
4. Discolored or Slimy Flesh
What It Looks Like : The vibrant red or pink flesh has turned brown, yellow, or gray, or feels slimy to the touch.
Why It’s Dangerous : Discoloration and slime are clear signs of bacterial growth or oxidation, which can make the fruit unsafe to eat.
What to Do : Throw away the entire watermelon. Even if only part of the fruit looks discolored, the rest may be contaminated.