WHAT IS THE RELATIONSHIP BETWEEN TASTE AND SMELL?

There are only four different types of true tastes - sour, sweet, salt and bitter.
Approximately 80-90% of what we perceive as 「taste」 actually is due to the sense of smell.
That is why when we have a head cold or a stuffed up nose, the food we eat always taste dull .

(There is an experiment showing the relationship between taste and smell at
http://www.exploratorium.edu/snacks/your_sense_of_taste/index.html
Do go to the website and read it yourself.)

2007-06-03 15:12:51 補充：
中文:真正的味道(taste) 其實祇得四種 - 酸, 甜, 鹹和苦.我們感覺到的味道(taste), 約80-90% 實際上來自我們的嗅覺(smell).所以當我們傷風鼻塞時, 都會覺得食物淡而無味.請往 http://www.exploratorium.edu/snacks/your_sense_of_taste/index.html有一個有關RELATIONSHIP BETWEEN TASTE AND SMELL的實驗

taste 是味道,　smell 是氣味　We taste the food with our tongues. We smell with our noses.

Taste = 味道, 係指味覺方面喎~~
Ref: http://hk.dictionary.yahoo.com/search.html?q=1&s=taste

而
Smell = 氣味, 係指嗅覺方面喎~~
Ref: http://hk.dictionary.yahoo.com/search.html?q=1&s=smell