More information on this poisoning incident in Long Island, NY –

“…the leak occurred when the boat was operated at a high bow angle, with a heavy load of passengers and with the canvas up, reducing the amount of natural ventilation — commonly known as backdrafting or the “station wagon effect”… It was also not immediately clear if the boat had working carbon monoxide detectors”

https://www.newsday.com/long-island/carbon-monoxide-boat-port-jefferson-1.46229900?fbclid=IwAR3b5L4w8KOyBYt6Pe9e-yd_eY9NwDE_TQ6lVUlZnCm7Js-_-kvs081YabQ