I am particularly struck by the website copy:
The only thing there's left to do for the classic SMINTAIR passenger is, to just sit back and relax. SMINTAIR's highly trained staff will be glad to service you.
There's also
Non-smokers will find the cabin air more refreshing than on any other flight with any other airline, as SMINTAIR adds fresh outside air to the conditioning system!
Given the choice of a non-smoking "conventional" flight, or a flight surrounded by smokers but with a little less recirculated air, I know which I'd choose, and it ain't these guys...