The results of questionnaire research on carbon monoxide (CO) poisoning in students of State Higher Vocational School in Nowy Sacz (Institutes of Economy, Pedagogic, Technical and Health) are presented in the study. The mean age of the group examined, with a female predomination (77.6%) was 22.7 +/- 4.94 years. The questionnaire covered demographic data and knowledge on CO source, exposure, most frequent and most severe symptoms, most severe sequels, risky behavior and risk groups in CO poisoning. The results obtained indicate on inadequate knowledge on CO poisoning even in young students population. The proper education and prophylaxis activity is necessary to avoid accidental CO poisoning, especially that they also occur in spring-summer season.