We know that others do not experience the exact same sensations, because there are reported differences, some of which has been discussed on HN, such as aphantasia. The opposite would be visual thinkers. Then you have super tasters and smellers, people who have very refined palats, perhaps because their gustary and/or oilfactory senses are more heightened. Then you have savants like the musical genius who would hear three separate strands of music in his head at the same time.