Seal gaps around windows, doors, pipes, and vents with caulk, weatherstripping, or foam
Use door sweeps and draft stoppers on exterior doors
Keep windows closed when smoke is present
Run a HEPA air purifier in the affected rooms
Use a fan to create positive pressure by blowing clean indoor air toward openings
Install or upgrade HVAC filters to a higher MERV rating if compatible
Cover or block unused vents and openings
Add window inserts or use double-sided window sealing film
Hang heavy curtains or smoke-resistant drapes
Place activated carbon filters near entry points or in air purifiers
Move furniture and sleeping areas away from the smoke source side
Ask neighbors politely to smoke farther away from shared walls, windows, or balconies
Report repeated smoke intrusion to the landlord, property manager, or HOA
Document dates, times, and locations of smoke intrusion
Request inspection of shared ventilation, ducts, and wall penetrations
Use bathroom and kitchen exhaust fans carefully to avoid pulling in outside air
Avoid creating negative pressure indoors by running too many exhaust fans at once
Seal electrical outlets and switch plates on shared walls
Use portable air cleaners in bedrooms and main living areas
Consider temporary room isolation with door seals and plastic sheeting
Check local tenant rights, building rules, and nuisance ordinances
Escalate persistent issues through formal written complaints
Seek legal advice if smoke intrusion continues and affects health or habitability