Are the Smoke/CO2 detectors less prone to false alarms the the normal smoke detectors?

Like everyone else, I'm plagued with false alarms (sometimes during the day, sometimes at 3am - super pleasant). I was talking to tech support on the phone and he didnt seem to know if the newer smoke/CO2 detectors were less prone to false alarms or not. Does anyone know? They offered to replace 2 of my detectors with the same model, but it seems like its replacing trash with trash. Houses are dusty, I've never ever had a false alarm from dust from any other smoke detector I've ever had (if there is one, its cuz someone is in the shower).