Here's what a friend had to say about this.
>Not another blinking study to inform us what we already know... Try three weeks in a jungle without food and other civilised luxuries.... You will soon find that your sense of smell will pick up anything. An empty bean tin at a hundred yards, a rotting animal half a mile away and the smell of cooking up to three miles away.... Sniffing a plant is enough to determine if it is edible or not...strange but true.
Now to get up and have some breakfast....I can smell toast
