A man and woman were found dead in Glencoe, Kentucky last Thursday after they left a parked car running so they could stay warm while they had sex, WCPO reports. It was 40 degrees out in Glencoe that night. Sheriffs say the two were killed by carbon monoxide that seeped in through a small hole in the sedan’s rusted exhaust pipe.

A single father and his seven children were found dead in their Maryland home on Monday, apparently poisoned by a gas generator left running indoors, CBS News reports.