Sad story out of Minnesota, and concerning to hear there were CO alarms in the home that apparently did not go off. Not sure what the situation was here (sounds like it’s still being investigated), but a reminder to check the manufacture date on your alarms. CO alarms have a lifespan of 7-10 years, after which the sensor no longer works (even though the test button still does). If you have an alarm with a manufacture date of 2013 or earlier, consider purchasing a new one. Many of the newer alarms have a 10-year sealed battery, a great choice if you don’t want the hassle of changing out batteries regularly.

https://kstp.com/news/family-shares-safety-warning-after-17-year-old-delano-girl-dies-of-carbon-monoxide-poisoning/5940351/?cat=1&utm_medium=social&utm_source=facebook_KSTP-TV&fbclid=IwAR0INjCxcfCFR3K_U9kNqxLy2ZKcuN-8Qc7ZaUqE3osSFDgh9CuS74-js84