One morning, before my coffee, I noticed something strange in my kitchen—a pink, crusty blob stuck where the wall met the cabinet. It didn’t move, smell, or make sense. I had no idea what it was, but I knew it didn’t belong. I posted a photo online, and theories poured in: insulation foam, old caulk, bug eggs, even mold. Most said: don’t touch it.

I called my landlord, who showed up with just a disinfectant wipe. He casually wiped it off, declared it “probably sealing foam,” and left. Mystery solved—or maybe not. Likely culprits included expanding foam insulation, aging caulk, or rare mold. Whatever it was, the experience taught me: