Learn English – difference between put your hand up and raise your hand

Contrasting "a distinctive smell ... " to "a distinct smell....".

The former means that the smell is different from other smells. The latter means the smell is easily sensed. So, in a situation where there are many competing odors, a distinctive smell might not be distinct. For example, in a room where a lot of people are wearing perfume, each perfume is likely to be distinctive, but they would not be distinct.

Just to put Davo's answer in as an answer, with a little more explanation...

In terms of the most essential meaning in this context, "in" and "with" have the same meaning. They both introduce adverbials indicating what it took to do what was done. "He broke the thick sheet of glass" stands as a sentence on its own, but is modified by the adverbial of manner "in one hit" or "with one hit". Both "in" and "with" can have other meanings, but here they introduce the same sort of adverbial. Adverbials of manner tell you how or in what way something is done.

However, as Davo notes, they carry different shades of meaning. "With" is more neutral than "in", as with would be more likely to be used if there is no surprise, and in makes it seem more remarkable. You can also indicate that you consider it remarkable by adding the word "just" - "in just one hit".