I raise deer and could tell you many stories about snort/wheeze, just the snort, and prolonged wheezes, along with a throat rattle similar to a long drawn out grunt. The most common exchange is a challenge or warning with similar sized bucks. Bucks even do the rapid snort to each other just to show dominance in a situation.

These vocalizations are very similar to antler rattling, in that some are simple vocalizing and others are very specific. If you do these, you are going to play with the big boys. If you are happy with whatever buck is nearby, dont do them, youll intimidate lesser bucks for sure. Plus, I know guys will laugh at me, but be careful...to a mature buck that hasnt made out your presence as a human, you become part of this situation, too.