Sneeze

A comment that is a waste of air and annoying to others. Something you say that is unnecessary and annoys people. A sly comment, a stupid comment, or a waste of your intellectual judgment. It is literally a waste of air to make yourself feel good but is inconvenient and annoying to others. Expressing an opinion that is not fruitful and was not asked for.

Person A: "That's so dumb. I would never do that."

Person B: "Bless you."
Person A: "I didn't sneeze."
Person B: "Yes, you did."

Sneezer

Someone who dispels their opinions when they are not asked. They say things under their breath, say things to sting other people out of context, or when it is unnecessary. Often someone who is possessed by their own narcissism. They have good opinions they must tell you about. They step into any discussion and tell you what they are thinking.

All the media hosts are sneezers; no one really cares what they think but they say it anyway.