Common sense would be associated with the pre-frontal lobes.
It depends on which part of the brain was injured - not all people lose their sense of smell. If the part of the brain that controls that sense is injured, then you will lose the ability because the brain cells are damaged and don't work to report smells like they used to.
The brain stem is the part that controls breathing, it is the stem that allows the respiratory system to work and help you breathe
My teacher used to say that common sense is very uncommon. Another statement is very true that I was born intelligent. Education ruined me. So common sense comes from the brain, which is not ruined by education.
brain stem
The part of the brain called the Cnifiliatispin controls all testing of heat conditions.
To the extent that there can be said to be such a thing as a "part of the brain that controls hope", it's probably the prefrontal cortex.
Action potential in the brain
brain stem
Action potential in the brain
The occiptital cortex (in the posterior, or back, part of the brain.
medulla
The cerebrum.