I keep smelling a smell of butter. my girlfriend cant smell it, and i've tried everything. i've showered, sprayed air fresheners, and nothing works.

Strange smells: Strange smells are generally nothing serious BUT your olfactory nerve is directly connected to your brain and in rare occurrences strange smells can be an indication of a brain disorder such as a tumor.

See MD: Suggest you see an Ear, Nose and Throat doctor (ENT) for an examination to evaluate your persistent smell of butter. You can ask your primary care doctor for a referral or look on a local hospital website's doctor finder in this specialty. You seem at your wits end, so don't delay. http://www.nidcd.nih.gov/health/smelltaste/pages/smell