For a very effective dating advice, here's one that most men had a lot of success with:

I call it- 'Perfume to Her Room'

I usually use it on a first date, but for the more advanced it can also be used immediately after opening her. Lets assume for this example that you are meeting her at a bar for a date and you've just walked in. (Because naturally you were later than her right?;)

Step 1: Create an excuse to get physically close to her. (hug, high five, doesn't matter)

Step 2: Notice her perfume.

Step 3: Say something like: "Oh my God, what is that?? That smells amazing!" Even if it stinks. You will now have a valid reason to continue smelling her throughout the evening.

Step 4: Look for good chances to keep smelling her throughout the interaction. You can say something like, "Man, your perfume really is great, I gotta smell that again." Don't ask for permission to smell it, you simply can't resist!

Providing you are both having a decent time this trick will allow you to smoothly transition from innocently smelling her to eventually nuzzling your face in her neck. Now at some point she will become totally conscious of what you are doing...but that's okay! Typically you have already created a good amount of intimacy by the time it happens and she would be fine with it.

So you may be wondering, 'how many times over the course of a date should I actually smell her?'

As many as you like. Usually I am in the ballpark of 4-8. It is not the number of times you do it that matters most but the progress of becoming more intimate with her.

You may also be wondering, 'when is the best time to do it?'

I personally like to save it for right after a highpoint in the interaction. (A meaningful eye contact, a moment of fun, laughter, etc.) However, these dating tips can also function as a failsafe to pull out of your back pocket if you run out of things to talk about or you want to change the subject.

And finally, what happens when she says, "I'm not wearing any perfume." Simple adjustment: Do everything explained above just change the word perfume to soap or even natural scent. Ex: "Not perfume?? No way, I don't believe you. Let me check again... (you double check;) Well, you've got the best damn natural scent I've ever smelled. Wow."

Enjoy,

Julian