Nose can detect one trillion odours

A flower smells sweet because of the combined effect of hundreds of odours The human nose can detect one trillion different odours, far more than we previously thought, say US scientists. Until now, the long-held belief was that we can sniff out about 10,000 smells. New estimates published in Science, external suggest the human nose outperforms the eye and the ear in terms of the number of stimuli

[godmother]

人間は、一兆の異なる匂いを嗅ぎ分ける力を持つと。そう言えば今朝もいろいろな花の香りがした。因みに、三色すみれがどこのお宅でも咲いているけど、香りはあまり良くないね。何の匂いなのかを知る必要もある。