We’re talking about serving on a submarine, in the military. Quality of life takes a back seat to health and safety, performance, and the mission itself. Personal space and weight are extremely limited on board.

What you’re suggesting is that smokers be given special accommodation by having their own room for smoking. Furthermore, they would need to be provided with special equipment to filter the air to remove all of the smoke produced by their smoking, otherwise it would spread throughout the other compartments as soon as they open the door to leave the smoking room.

Is any of this reasonable? I don’t think it is. The only reasonable accommodation I can think of would be to allow smokers to bring a supply of nicotine gum or patches.