Mostly, smell is used to help in the ability to taste food. (If you plug your nose, you can`t taste food as well). Also, it can alert you of danger. ( If there is a house fire when yo are sleeping, you smell the smoke and it will alert you).
Any use of electrolysis in everyday life of an appartment.
Polonium is not used in everyday life.
how are emeralds use in everyday life
In everyday life you use it
Unless your "everyday life" involves work in some area of engineering, you won't use matrices in your everyday life.
Some gay kids use it in everyday life... go ask them
adding subracting mulitplying and counting everyday
how is x-rays used in our everyday lives
breath
A lightbulb
you breathe
Some of the mathematicians teach in everyday life or they either just do their job.