You should probably clean your room! You sneeze because dust gets caught in your nose hair... clean up your room and everything should be ok. Here's a trick i use, clean your bed, study table, computer, floor and everything else thats in your room. Mop the floor with antiseptic or if you have a carpet, vacuum it 3-4 times and then clean it with a carpet cleaner solution. Then clean all your windows and the ceilings. By now, all the dust on physical areas should be clean. Now, open up all your windows , balcony, door and everything else that leads outside and turn on the AC and put it on circulation or if you don't have a AC just put on the ceiling fan, all the dust should go outside now. Just do this once in a while and your room should be spotless. Oh yea, I forgot to mention that your bed/ bed sheets are the culprits most of the time -- wash them at least once a month. And try not to use a blanket that irritates your nose!
I would say that this is a good practice for any illness