Olfactory Bulb

The Olfactory Bulb is a brain structure responsible for our sense of smell (known as Olfaction). Located at the tip of the olfactory lobe, the bulb processes information about odors after receiving sensory input from the nose.

So if there is a freshly popped bag of popcorn anywhere near you, your nose will likely pick up the scent and transmit the signals to your olfactory bulb, which decodes the odor information and communicates with other brain areas to identify and respond to the smell.