There’s something oddly comforting about stumbling across someone online who’s done their homework. I came across a discussion recently where someone had just bought a 1986-built house and was methodically working through the puzzle of that mysterious “grandparents’ house” smell that seemed to cling to everything. What struck me wasn’t just their thoroughness – they’d already replaced carpets, deep cleaned floors, identified humidity issues, and were planning strategic attacks with ozone machines – but how universally relatable this problem seems to be.