yes with some brain tumors it impairs your smell..A brain tumor can obstruct the flow of cerebrosinal fluid (CSF), which results in the accumulation of CSF (hydrocephalus) and increased intracranial pressure (IICP). Nausea, vomiting, and headaches are common symptoms.

Brain tumors can damage vital neurological pathways and invade and compress brain tissue. Symptoms usually develop over time and their characteristics depend on the location and size of the tumor. A brain tumor in the frontal lobe may cause the following:


Behavioral and emotional changes
Impaired judgment
Impaired sense of smell
Memory loss
Paralysis on one side of the body (hemiplegia)
Reduced mental capacity (cognitive function)
Vision loss and inflammation of the optic nerve (papilledema)
A tumor located in both the right and left hemispheres of the frontal lobe often cause behavioral changes, cognitive changes, and a clumsy, uncoordinated gait.

A tumor in the parietal lobe may cause the following symptoms:


Impaired speech
Inability to write
Lack of recognition
Seizures
Spatial disorders
Vision loss in one or both eyes and seizures may result from a tumor located in the occipital lobe.