Nikki Zellner | School Carbon Monoxide Safety

Mom of school CO survivors sounding the alarm on lack of CO detection in daycares, K-12, and college campuses. Founder | Speaker | School Safety | Law changer

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

@UNLincoln Was it a natural gas leak or was it carbon monoxide? Would love confirmation to know if I should add this incident to our national campus-based CO incidents tracker.

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

@JeffreyCook @waff48 @spann @NOAA @NWSHuntsville In residential neighborhood in Madison, AL in between Eastview Drive and Old Madison Pike. Wellington Dr area.

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

Storm damage: Just off Old Madison Pike, Madison, AL

#wxtoday #stormdamage #tornadooutbreak

@waff48 @spann @NOAA @NWSHuntsville

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

@FOXWeatherDesk @spann @waff48 @NWSHuntsville @NOAA Yes, you can use.

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

Storm damage: Madison, AL at Rainbow Mtn/Hughes Rd. #tornadoseason #alabamaweather @spann @waff48 @NWSHuntsville @NOAA

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

Power is out: Do not run generators in/near your home. Keep them 25 feet away from walls of your home.

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

Storm damage: Madison, AL at Rainbow Mtn/Hughes Rd. #tornadoseason #alabamaweather @spann @waff48 @NWSHuntsville @NOAA

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

Evacuate everyone first, then call 911. ☎️

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

@MicheleGay_ @SafeSchoolsOrg @MLDenault1228 Oh wow! I would love to learn more about becoming a Safe & Sound speaker as someone who speaks regularly on school CO safety after my children were poisoned.

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

@lorialhadeff Sending all the support that this goes through. North Alabama resident (and fellow school safety advocate here!)

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

@516snkrs Resources: https://t.co/ppCx56xAJP

If it’s a confirmed CO incident, i want to add this to my database!

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

@516snkrs If your gym is detached from the remainder of the building, and does not share same ventilation/ductwork as the building where issue occurring, the gym is ok.

However, the first priority when a CO leak is suspected is to remove ALL occupants outside into fresh air, then 911.

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

@maxschachter @alexsafeschools I’ve been following your efforts since the beginning and it would be an honor to include your story in honor of Alex.

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

@maxschachter @alexsafeschools @maxschachter - would it be possible to interview you for my upcoming book, “the watchdog way”? It’s about using our personal experiences as a starting point to create broader change for the safety and strength of our communities.

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

Because CO can pass through drywall, and follow ductwork from one space to another, having working detection AND trained staff is paramount to safety.

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

Propane-powered concrete saw being used in adjacent suite cited as source. Sadly, this is not the first time portable devices have caused CO injury to campus occupants. Our research indicates close to 40% of campus-based CO events are from portable or temporary devices. 🧵

[CBS 13 News @WGME]

Investigators say they have determined the source of the carbon monoxide leak at a Kittery day care center that resulted in multiple children and adults being rushed to the hospital. https://t.co/Wy0RDPkoCQ

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

Most US building codes are tied to fuel-fired fixed appliances needing to be present, but each state (and even municipality) differs on requirements.🧵

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

The Kittery, Maine carbon monoxide incident in a daycare is the 8th campus-based CO incident in 2025, and the 16th incident in the 2024-2025 school calendar year.

https://t.co/5zLgoBUDSw

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

When it comes to measuring CO levels in the bloodstream, that’s actually done through a Carboxyhemoglobin test, which measures in %. Nonsmokers should have a level of .5-1.5%. Levels above 2% indicate CO exposure. Higher levels indicate poisoning and further treatments needed.

[Nikki Zellner | School Carbon Monoxide Safety @KnowYourCO]

Great extended coverage of the CO incident in a Maine daycare yesterday.

Important: the story references “levels” in two spots.

CO levels in a building are measured in PPM (parts per million). Ranges from 0 - thousands of PPM, but starts causing health effects at 10ppm.

[Dan Lampariello @DanWGME]

7 children and 4 adults were treated for carbon monoxide poisoning last night after firefighters found levels 10 times the acceptable amount in the building.

We're following up with questions for the owner & investigators today.

Latest 👇
https://t.co/yAdUbeCc34