Are you here to learn? Or, are you here to spread conspiracy theories.
There are correct answers in Physics. Newton's Third Law applies anytime there is a force (including in the vacuum of space). Of course, if you are surrounded by air molecules acting as a fluid, you are going to to get different interactions including a "pressure gradient".
Your biggest mistake is your claim that Newton's third law depends on a pressure gradient (it doesn't). Of course, when there is a force caused by a pressure gradient Newton's third law still applies (since it always applies).
To answer this question, if you face puts force on the air molecules in the front of it, then the air molecules put an equal and opposite force on your face. That is Newton's third law. Of course, whether or not this happens depends on the specific circumstances.