There can be significant uncontrolled air movement between suites in apartment buildings that may be hidden from view.
Add portable air cleaners or #CorsiRosenthalBox, and keep windows open a crack to encourage outdoor air exchange.
#BuildingScience
Source reddit post: https://www.reddit.com/r/ontario/comments/zb2dkq/is_this_allowed_we_noticed_a_cold_draft_coming/
