I had this issue in Texas. My fresh air intake duct was right next to my neighbor's patio on the 5th floor. Again a small space. The apartment complex was a "no smoking" complex. The neighbor had an ashtray on the table and openly smoked on his patio. I took pictures. My apartment smelled of cigarette smoke and the smoke woke me up at night. I have bad asthma. The landlord did nothing despite numerous complaints.

