What Anna Faris's CO Scare Teaches Every Traveler

Carbon monoxide nearly killed Anna Faris at a vacation rental. That story broke this week — and it should change how every traveler thinks about the place they're sleeping tonight. Carbon monoxide, or CO, is a gas you cannot see, smell, or taste. It can fill a room while you sleep and you'll never know. According to the CDC, CO sends more than 100,000 people to emergency rooms every year in the U.S. Vacation rentals are one of the highest-risk settings because guests have zero control over the appliances, ventilation, or the detector on the wall. CO is the leading cause of accidental poisoning deaths in the United States, according to the CPSC — and most victims never knew they were in danger. In this post, you'll learn exactly what Anna Faris's scare reveals about carbon monoxide detector vacation rental safety, why the detector already in your rental might not protect you, and what to do before your next trip.

What Does Anna Faris's CO Scare Actually Tell Us?

Anna Faris is not careless. She's not someone who ignores safety. And she still ended up in a dangerous CO situation at a vacation rental. That's the whole point. CO doesn't pick people based on how careful they are. It builds up silently in any space with a gas appliance, a blocked flue, or poor ventilation — and vacation rentals are full of those things. Gas stoves, older water heaters, attached garages, fireplaces — all common sources. You can read more about how each of these sources works at Do Gas Stoves Produce Carbon Monoxide? What Cooks Need to Know. The detail that keeps coming up in coverage of the Faris incident is how routine everything felt before people got sick. That's exactly how CO works. According to NIOSH, exposure to just 150 PPM of CO for two to three hours can cause life-threatening poisoning — and most people feel nothing unusual until it's almost too late. Symptoms like headache and dizziness are easy to blame on travel, wine, or bad sleep. By the time you realize something is wrong, your thinking may already be impaired enough that you can't act. Takeaway: CO can make you too sick to save yourself before you ever suspect a problem.

Why Can't You Just Trust the Detector Already in Your Rental?

Here's the uncomfortable truth. The CO detector on the wall of your vacation rental might be expired. It might have a dead battery. It might be a cheap, uncertified device that looks real but won't alarm at dangerous levels. You have no way to know. The NFPA says CO alarms should be replaced every five to seven years — but there is no inspector showing up to check the one in your Airbnb. Many travelers assume that if a detector is on the wall, it works. That assumption is wrong, and it's dangerous. Consumer Reports and CBS News have both warned this year that some CO detectors sold on Amazon — devices that look legitimate — have failed to alarm even during dangerous CO exposure. Without UL 2034 certification, a CO alarm has not been tested to the standard that ensures it actually works. A detector that doesn't alarm at 400 PPM isn't a safety device — it's a false sense of security. Even a working, certified alarm only sounds after CO has already climbed past a threshold. It tells you the air is bad. It doesn't tell you how bad, or how long you've been breathing it. For a fuller look at how CO levels compare, see Carbon Monoxide PPM Levels Explained: What's Safe, What's Dangerous. Takeaway: A detector you didn't bring yourself is a detector you cannot verify.

What Makes Summer Vacation Rentals Especially Risky for CO?

Most people think CO is a winter problem. Furnaces, fireplaces, cars warming up in the garage. But summer has its own set of risks — and travelers are caught off guard because they're not expecting it. Gas-powered generators are one of the biggest summer CO killers. Vacation rental owners often keep them on-site for power outages. A generator running in or near an attached garage can flood a sleeping area with CO in minutes. Pool heaters are another underreported source. Many vacation rentals with pools use gas heaters that vent improperly or are located too close to open windows and doors. According to the CDC, CO poisoning from generators alone kills dozens of people every summer. Then there's the simple fact that summer rentals are unfamiliar. You don't know how old the water heater is. You don't know if the gas range vents properly. You don't know if windows seal in a way that traps exhaust. Carbon Monoxide Poisoning While Sleeping: The Real Risk explains why sleeping in an unfamiliar space with any of these risks is especially dangerous — your body has no defense when you're unconscious. A CO leak that starts at 11 PM can reach fatal levels by 2 AM, and you will sleep right through the warning signs. Takeaway: Summer travel creates CO risks that most vacationers never think about.

What Should You Do Right Now?

• Bring your own portable CO detector to every vacation rental, hotel, or Airbnb — don't rely on what's already there
• Look for a detector that is UL listed under UL 2034 — this is the safety standard that means it's actually been tested to work
• Choose a detector with a live PPM screen, not just an alarm — you want to see CO levels rising before they hit dangerous thresholds
• When you arrive at a rental, check the existing CO detector: look for an expiration date, press the test button, and note where it's placed
• Never run a generator, grill, or gas-powered anything inside — even a garage, porch, or partially open space counts as 'inside' for CO purposes
• If multiple people in the same rental feel headaches, nausea, or unusual dizziness at the same time, get outside immediately and call 911
• Place your portable detector near the sleeping area — CO affects you most when you're asleep and can't notice early symptoms

Anna Faris got lucky. Most people who end up in a serious CO situation don't get a second chance to tell their story. The real lesson isn't about celebrities — it's that CO doesn't care how nice the rental looks, how many five-star reviews it has, or how careful you think you're being. The only thing that actually protects you is a detector you bring yourself, one you know works, one you trust. If you're traveling this summer — to a lake house, a cabin, a beach rental, or any Airbnb — the AirShield™ 3-in-1 Portable Carbon Monoxide Detector is built exactly for that. It's UL listed, shows live CO, methane, and propane levels in PPM on an OLED screen, and plugs into any outlet in the world from 100 to 240 volts. You pack it, you plug it in, and you sleep knowing the air is actually being watched. Learn more and get yours at airshield.store before your next trip.