Hooray, nonsense season has started again.
Jet2 738 smoke in cabin, crew evacuated pax, pax slightly injured. Airport fire crew deployed as expected. No drama.
Move on.
Bet if it was a Ryanair aircraft it would be discussed here for months and months...
would also say it may be de icing fluid a FR flight at KIR a few years ago had an runway evaction because they thought it was "smoke".