Almost all office buildings have photoelectric sensor that see smoke, so if you sit under one and blow vapor into it long enough it will set it off.
But unless you are trying to, you will never set one off at work.
Not a single commercial or residential photoelectric (or ionic) detector, not even sensor could be trigger by the vapor of a PV unless the device hasn't received maintenance for years.
If the detector has a thermal detector too, is another situation.
As a proof, see the detectors installed in mechanical rooms where vapor is present (boilers); and many states allow to have only detectors instead of sprinklers.
Some places has more than one fire alarm system and people is not aware (underwriters lower premiums when more protection is present) so it could be your case.