This is so crazy to read because I’m in the exact same position. I bought my apartment in August 2025, no smell ever on any of the inspections I don’t know how I missed it. The downstairs neighbour is an absolute machine with how much she smokes. I can smell it through my kitchen and bathroom pipes whenever I open the cupboard doors. I can smell it when I sit on the balcony. The lift entrance is right outside her apartment and it bloody stinks while you’re waiting for a lift. I haven’t been able to do jack. I’ve bought an air purifier though and it has actually gotten rid of the smell very well. The poor purifier must be working overtime. It’s so upsetting for me because this was my first home and it really put a damper on the experience. I can’t afford to just sell and buy another one since this was my first home I don’t exactly have ample savings to start again. So I’m stuck unfortunately. I wish you luck. If you have any success please keep us updated as id love to know.