Her boyfriend kept farting under the covers until it caused her actual brain damage. A couple was sleeping one night when the girlfriend suddenly felt dizzy and nauseous. Moments later, she passed out. Panicked, the boyfriend immediately called for an ambulance. At the hospital, doctors diagnosed her with hydrogen sulfide poisoning. Confused, they asked the man if she had been exposed to any toxic gas, but he denied it. After all, they're always together, so wouldn't he be poisoned too? After more questioning, the truth came out. The boyfriend had a habit of farting under the covers, and the girlfriend liked to sleep with the blanket over her head. This meant she was inhaling all of it, night after night, until her body couldn't take it anymore. Doctors said it was one of the strangest cases they'd seen. She recovered, but only after weeks of treatment. Now the couple sleeps with separate blankets, and maybe, just maybe, open windows. So yeah, if your boyfriend's a serial farter, tag him now. He might be deadly.