Many people find they can breathe better in salt air, so salt lamps are fairly popular. You need a fairly small room for one to work very well, and the effect is only while you're in the room. It goes away as soon as you leave the room. Same thing with the beach: you breathe well while there, but as soon as you leave, the effect goes away. So it's nice in the moment, but doesn't work cumulatively.

I bought a salt lamp but it was useless it did nothing for my breathing.

I have two in my sewing room that is 10 square. If that helps calculate your room.

I have my sewing room with salt lamps an I notice I can breath clearer in there than any other room.

Even with the half brain that I have?