Testing my colleagues for sensitivity to odour is about 20% of my job. I use an olfactometer to perform this test. This is commonly referred to as an odour panel. I love this part of my job because I get to relate to many people at very fundamental level. These photographs do not go anywhere near explaining why this occurs. Basically most people have no idea how sensitive they are to odour and that sensitivity is also very subjective. Added for Cee’s Fun Foto Challenge: Sense of smell.