You did "not" smoke.

readok2009

You did not smoke. i.e. The action \"smoke\" was not performed by you in the past.
It is different from the meaning of using present tense ¨Donˇt + verb〃
= ask you not to do an action (i.e., smoke/run/see, etc)

correct?

guanshian

"You don't Smoke" is better.