A smoke machine created a haze inside the nightclub.
Smoking of cigarettes creates a haze inside a nightclub that permits smoking.
My head is in a bit of a haze this morning. (I’m feeling a little dizzy and I’m unable to think clearly.)
The sky looks hazy.
The word "hazy" is an adjective:
The inside of the club suddenly became hazy as it filled with people.
My memory of that evening is kind of hazy.
Sheila has a hazy memory of something that happened at work a few weeks ago.
Some medications can make a person feel hazy and light-headed.
The word "haze" is also used to describe a ritual of bringing new members into an exclusive group. This is generally discouraged nowadays–although it is still practiced–because the hazing often involves physical and mental cruelty.
Tom was hazed when he tried to join a fraternity at his college.
Christine was hazed by other members of the volleyball team when she joined the team last year.
There was a hazing incident which resulted in the death of a young man at the school.