It would help to know where you are. In NSW smoke alarms are covered by state government legislation:
https://www.legislation.nsw.gov.au/#/view/regulation/2000/557/part9/div7a
In a nutshell:
https://www.stratachoice.com.au/blog/news/whoisresponsibletorepairorreplacesmokesensorsdetectors
There are plenty of specialised fire safety firms/electricians who do fire safety work. A good place to start would be raising concerns with whoever does your annual fire safety check.
The fire safety check requirements are covered by the fire safety legislation & if you’re a strata committee member it’s worth a read:
https://www.legislation.nsw.gov.au/#/view/regulation/2000/557/part9
(& apologies if you’re not in NSW.)