此处为何选 particular 而不选 typical ?

particular强调特殊性,与众不同的.而typical意思是典型的,所谓典型即可以代表大多数的,是与大多数相一致的.

typical is like common
but in this sentence you need to use particular- specifically pointing to one thing...

particular ＝ 是指 指定、某一种、特定的 嗅觉
typical 是典型