I can’t imagine that brown dwarfs would have planets even remotely like what we would consider habitable.
That would make a fantastic sci-fi story. A planet orbiting a brown dwarf for billions of years, never getting full sunlight, but somehow life evolves into an intelligent species. Near permanent darkness would guarantee extreme sensitivity to light in the infrared spectrum..............
You'd be talking about a planet orbiting inside the heliosphere or plasma sheath of a dwarf star with heat reflected back onto the planet more or less equally from all directions. Some scientists are now claiming tha would be the MOST likely scenario for habitable planets.
If there were inhabited planets in orbit around brown dwarfs, it seems most likely to me they'd be Europa-type planets with life possibly existing in oceans under thick ice layers, not places for us!