When to use Incense

So I first bought incense so I could relax while reading and listening to music, and it helps out a lot. I was first introduced to incense by a friend that used Nagchampa (a staple and a classic). He burned it while just hanging out and his room always smelled pretty good. I use it while in the bathroom, smoking marijuana, or just hanging out. Lately I haven't been using it in my room because of fear of my computer getting full of dust and burnt incense.