What is the definition of Permanent Fumes?

"Permanent fumes" is like the kind of toxic smoke that stays in your lungs forever after a wild chemical explosion gone wrong. Imagine this: "The old garage's notorious 'permanent fumes' still linger, making even the most seasoned mechanic recoil with a sneeze, like a stinky old sock left in the microwave." Not exactly a pleasant experience, especially if you're an outdoor enthusiast or just someone who appreciates good ventilation.