Mr. Snook has been after a carbon dioxide monitor for some time now, worried that our new insulated windows are actually killing us. He ordered this one in the Boxing Day sale, and it’s just arrived today. So now he’s walking around the house going “TWELVE HUNDRED IN THE LIVING ROOM! WE NEED TO VENTILATE!” Forecast today is for 33C/91F. Fml. 🤦♀️