We have made mention of the functions of incense in the game, but I'd like revisit this topic to mention that I make a point of putting the Egyptian incense just inside the entry of a house, for the calming effect to working sims coming home. I also place the Chinese incense anywhere someone is increasing skills: reading, television, writing, painting, martial arts, etc., and it speeds up their progress. In some areas I place both, and the effects appear to stack. For reluctant lovers, the French incense, strategically placed.