Question

According to McBurney and Collings, the average threshold for human smell is one drop of perfume diffused through a ______ room apartment.

a) 1-room
b) 2-room
c) 3-room
d) 4-room

Answer 1

The average threshold for human smell is one drop of perfume diffused through a 4-room apartment.

Step-by-step explanation:

The average threshold for human smell according to McBurney and Collings is one drop of perfume diffused through a 4-room apartment. The diffusion of odor molecules in the air allows us to detect smells. Humans have about 12 million olfactory receptors, distributed among hundreds of different receptor types that respond to different odors. This allows us to sense about 10,000 different odors. Compare that to other animals like mice, which have about 1,300 olfactory receptor types and can probably sense more odors.