A personal safety expert says to never travel anywhere without a portable carbon monoxide detector .  Carbon monoxide poisoning is a “silent killer” that has caused several tourist deaths in recent years.  This $58 device from Amazon alerts you of toxic gases that you otherwise wouldn’t be able to see or smell. When you think of safety risks on vacation, you might picture being pickpocketed , getting food poisoning, or being thrown off of a Jet Ski. You probably don’t think about what personal safety expert Dannah Eve calls “the silent killer.” Because it’s caused several recent tourist deaths, travelers need to be aware of it—as well as the portable device that could save your life.  In February 2025, three women died of carbon monoxide poisoning at a hotel in Belize. A month later, a 14-year-old boy died of the same thing at a resort in Costa Rica. Since these leaks are invisible and odorless, a portable carbon monoxide detector is the only way to prevent a tragedy.…