More than one in four in Ireland considers that non-smokers with lung cancer should have their treatment of smokers' priority, the survey says.
Findings marking the beginning of the International Month of Lung Cancer Consciousness, come as a husband of a man who died of lung cancer, says that society must be less condemned to those who suffer from illness.
A study by 1,017 adults on behalf of the Marie Keating Foundation's "Am Lung Cancer" has shown that 27% of citizens believe that non-smokers who receive lung cancer should be treated as a priority over those who smoke.
It also found that 17% believe that health insurers should not cover lung cancer patients, and 34% of adults agree that lung cancer patients are faced with a public stigma that other cancer patients are not faced with.
One in 10 stated that he believed it was acceptable.
Venice's receiver quickly lost Martin's wife to lung cancer earlier this year.
By launching Marie Keating Foundation's campaign, Mrs Quick spoke about how she feels stigma and judgment.
"When someone diagnoses cancer, it's a tragedy, no matter what cancer, we all bring different ways of life, and getting cancer is not one of them.
"When you worry and worry about someone you love with lung cancer, it's hard to hear those words of guilt and judgment. We have to be less convicted when someone gets lung cancer.
Nobody chooses to get cancer, and everyone can get it. "
Liz Yeates, Executive Director of Marie Keating Foundation, said more people are dying of lung cancer every year than any other type of cancer.
"Many people have a picture of who they believe is a lung cancer patient, but this campaign illustrates the variety of people they can affect. We want to change the talk and tone about lung cancer from court judgment to empathy and support."
The study found that 16% of respondents said they were well informed when it comes to signs and symptoms of lung cancer, compared to 31% who said they were well informed about breast cancer and 26% compared to skin cancer.