Dorm rooms have to work hard to house all your earthly possessions, from work equipment, to clothes, to toiletries, to food, and with all these can come a host of different odors that can sometimes make them smell bad.
As a recent graduate, I know how important it is to maintain a nice-smelling dorm room, and during the holidays, realized there were things my parents did to make our house smell nice. My dorm room regularly smelt musty, despite my attempts to keep it clean and I hadn't even noticed. Becoming nose-blind to a dorm room's odor is often the reason why they end up smelling so bad.
