@dan613 @lednaBM Agreed, #GeneHackman deaths probably #carbonmonoxide.
But alarms don't always help even if you have them. CO detector sensitivity degrades over time, and people neglect to replace them. Some people have poor hearing and/or sleep too deeply to hear alarms. CO poisoning is insidious, reducing both physical and cognitive abilities to take action. Dog w lower body weight wd have been overcome first. Wife may have died last, ignoring her own symptoms to attend to dog and husband.