Smelling odors that are not real is called several things, including phantosmia or olfactory hallucinations. Sometimes simple things can do this, like recently having a respiratory infection, or having stopped up sinuses, or a migraine can do this. But since it can also include things going on in the brain, for example problems from a head injury, or temporal lobe seizures, or stroke, you MUST visit a neurologist on this one, rather than going by what we say here.
A couple other things are, if you recently changed laundry detergent, fabric softener, soap or shampoo, this can cause strange smells. Also, if someone in your household recently used bug spray all over the place, it could even be that. And then sometimes medications can cause strange smells. But like I said, you will have to visit a doctor, because it could be a sign of something rather serious.
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.