Whether you're staying in a hotel or Airbnb, visiting a friend's home or a relative's cabin, or driving your own RV or boat, it's important to protect yourself and those traveling with you from carbon monoxide (CO). This invisible, odorless gas poses a significant risk if fuel-burning appliances are not properly ventilated. A travel CO detector will alert you to danger so you can escape in time and prevent potential illness or even death.

When choosing a travel gas leak meters, look for one with an easy-to-read digital display that can show you the current CO levels in real-time. You also want it to be small enough to slip into your luggage without taking up valuable space. And it's a bonus if your chosen model can double as a smoke detector or can be charged via USB.

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This tiny device from Gzair is so small, you can easily slip it into your purse or pocket without noticing it. It's lightweight and uses two AAA batteries to operate, which it can hold for up to 10 days of continuous use. A lanyard attachment makes it simple to hang this detector around your neck and keep it close at hand.

While some states require that hotels install carbon monoxide detectors in guest rooms, many do not, including the hotel where my husband suffered from severe CO poisoning. While it was initially suspected to be a heart attack or stroke, hospital and hyperbaric chamber tests confirmed his symptoms were due to carbon monoxide poisoning. We now always travel with a carbon monoxide detector and highly recommend that others do the same.