#29026
Jimmy-T
Keymaster

    Check the venting and seals between apartments, including the spaces at the top of walls. 

    Also, some more cheaply build apartments have air conditioning that transfers air from one unit to the next. 

    As far as an expert goes, all I can suggest is that you Google building surveyors and ring around until you find one that has specific experience in this area.

    The opinions offered in these Forum posts and replies are not intended to be taken as legal advice. Readers with serious issues should consult experienced strata lawyers.