That was not my experience.
Like any Carnival ship if you are in the Piano Bar or Casino you might encounter smoke but I did not find it better or worse than the other ships. Some say the decor on the Freedom is a little over the top but that is in the eye of the beholder. I don't think you have anything to worry about. I would not hesitate to cruise on Freedom again.
52 Carnival: Mardi Gras, Ecstasy X2, Fascination X6, Celebration, Elation X5, Glory X5, Fantasy X4, Valor, Holiday X3, Imagination, Liberty, Spirit X2, Freedom, Destiny X2, Splendor X2, Dream X2, Conquest, Legend X3, Victory, Sensation, Paradise, Inspiration, Magic X2, Triumph, Miracle, Breeze
6 Norwegian: Sky, Jewel, Dawn, Epic, Pearl, Breakaway
7 Windjammer: S/V Legacy X3, S/V Polynesia, S/V Caledonia, S/V Diamant, S/V Sagitta