A window-mounted AC unit with a built-in smokeless grill chamber. Sear at 600°F while your apartment gets cooler. Your neighbor smells nothing.
You're in your 400 sq ft Manhattan apartment on a July evening, searing a perfect restaurant-quality steak at 600°F. Your apartment fills with the amazing aroma of searing meat, but ZERO smoke or eye-burning fumes. The room is actually getting cooler, not hotter, and your neighbor below smells nothing. You pull a perfect medium-rare steak from a device that looks like a sleek AC unit.