Lesson 27 · about 20 minutes
Smell and taste
Why menthol feels cold, chilli feels hot, and some mirror images smell different.
You will learn
- How smell receptors turn molecules into patterns your brain reads
- Why some mirror-image pairs smell different and others smell the same
- Why chilli feels hot and menthol feels cold
- What the five tastes pick up, and why sweeteners are needed in such small amounts