SAS A319 cabin smoke
 

A Scandinavian Airlines Systems plane was forced to make an emergency landing in Gdansk, Poland, shortly after takeoff on Tuesday due to smoke in the cabin, the airline said.

Eighty eight passengers and five crew members were evacuated upon landing and were unharmed, SAS spokesman Knut Morten Johansen said, adding that it was unclear what had caused the smoke.

The Airbus 319 had been due to fly from Gdansk to Copenhagen, and had been scheduled to arrive in the Danish capital at 0550 GMT, he said.

(Reporting by Jacob Gronholt-Pedersen; Editing by Susan Fenton)

Aviation Herald: SAS A319 at Gdansk on Jun 20th 2017, smoke in cabin

At least smoke is visible and undeniable. Even a smell of smoke gets attention ... if it's detectable by the crew. Aviation Herald shows five other incidents in the past ten days:
Lufthansa A319 near Hamburg on Jun 16th 2017, smell of smoke in cockpit and cabin
Cathay Dragon A320 near Hong Kong on Jun 16th 2017, smell of smoke in cockpit
United B739 near Tallahassee on Jun 13th 2017, smell of smoke in cabin
India A321 near Mumbai on Jun 13th 2017, burning odour in cockpit
American A333 near Shannon on Jun 12th 2017, smoke in cabin, electrical odour

Someone needs to invent a way to make Toxic Cabin Air visible or undeniably smellable.