The most common cause of smoke detector false alarms is insects. Typically spiders. Smoke detectors come in two varieties, optical which have a chamber sensing for visible smoke and Product of combustion detectors which will detect invisible gasses. In either case if an insect typically a small spider crawls into the chamber it will set off the detector. In some systems, your is apparently one of them, if one detector trips, it trips the rest of the units to initiate the audible annunciation throughout the house.
Immediate remedy is to go out ans start turning off circuit breakers to find the one for the smoke detectors. It should be one breaker for all of them.
Then you clan remove them from the ceiling and clean them, which should be done annually anyway.
Expect to pay from $60. to $110. an hour to have an alarm company or electrician do this.
Clint
Summit Security