Born Ann-Margaret Olsson in Stockholm, Sweden on April 28, 1941, the redhead who would one day be known simply as Ann-Margret spent the first five years of her life in her native country before her electrician father was offered a job in stateside.
The one exception is if it you only hear your carbon monoxide detector beeping every minute or two, which could be a low-battery warning signal. In those cases, you should immediately replace the battery, and if there is no battery present, you should call emergency services just to be safe and exit your residence.
Carbon Monoxide (CO) is an odorless, colorless and tasteless, yet deadly gas. Never unplug or remove the battery to silence a CO detector or CO alarm. You may go back to sleep and suffer the deadly consequences of carbon monoxide poisoning. At the very least, ventilate the area and change the detector's battery.