I think this is a very legit and great talking point for young men. Dealing with women, whom you are not necessarily interested in, but share a common space and will see frequently. These are certainly not strangers, these are people within your social circle, even if the relationship is only business or say in school. You not only see these people many times a week, or even day, but you will eventually be required to work with them to produce results.
The advice I give is to be confident. That sounds easy, but it isn't, it is a long process of developing confidence in yourself that is so deep you truly don't care what others think of you. Most of our communication is nonverbal and when you develop this level of confidence women pick up on it immediately. Women are excellent at reading men. If they read you are confident they will not be as likely to blank you.
Body language would be a look of confidence in your face and eyes, especially eyes. As you walk down a hallway towards them you don't give the happy to see you!! look, you give the confident eye contact looks. You look at them with a friendly yet masculine gaze and either they return eye contact in a friendly matter or they don't. If they do, just nod your head in acknowledgement or politely say "hi" and keep moving quickly as if you don't have time to stop and talk. If they don't make eye contact just keep on trucking and don't give it a 2nd though. Either she will look back and you acknowledge it or she will look away or at her phone and in that case you confidently walk by her like she doesn't exist.
Shoulders back, chest out, eyes forward. Practice this to get more comfortable walking with confidence. Women pick up on this very quickly.