When the air inside an aircraft cabin get contaminated with fumes (visible or invisible) or smoke the industry has termed that a “fume event”. recently PR departments are trying to establish the wording “smell event”.
The industry itself estimates one fume event in every 2.000th flight. With some major airlines this would be one event every day.
- Passengers post oxygen mask selfies as plane makes emergency landing – Yahoo News
- Lufthansa A319 near Munich on Jul 26th 2015, odour in cabin | AeroInside