I am able to clear this odor too. Two Air purifiers running. Treat everything wood with Biokleen Bac-Out floor/surface cleaner (floors, tables, shelves, chairs, etc). Replace every linen possible with clean ones (we have extra throw pillow covers, blankets, shower curtains etc). Spray other cloth items (upholstery, rugs, drapes) with Biokleen Bac-Out Fabric Refresher (don’t give into Febreze, it won’t last and has its own weird smell). Boil vinegar on the stove. Clean every window and hard surface (tub, counter tops, fridge, stove) with a vinegar/water solution. If you have AC or heat with filters, change them out for new ones - you can get some with charcoal in them to help with odors, it’s worth it. Do multiple treatments for each room with Ozium spray. Leave a chunk of a Bad Air Sponge in a ramekin or something in a couple of out of the way spots (behind dishes on a high shelf, behind books) but label it as air freshener in case someone comes across it.
It sounds like a lot but it works.
Edit to add: Supply List:
Air Purifiers (amazon or Bed bath and beyond with a coupon)
Biokleen Bac-Out Floor/Surface Cleaner (Whole Foods, Co-ops, some Walgreens)
Biokleen Bac-Out Fabric Refresher (Whole Foods, Co-ops, some Walgreens)
White Vinegar
Ozium spray (Walgreens, Walmart, head shops)
new filters for HVAC systems
Edit to add: keep the windows closed for all of this treatment. The fresh air will only dilute your treatments. But, do air it out for about an hour before the next guests to rid the Ozium out.