Kerosene lamp

The World Health Organization considers kerosene a polluting fuel and recommends that "governments and medical practitioners immediately stop promoting its use in the household."

An excerpt from the article 13 facts about Kerosene lamp
Petroleum smoke contains high levels of harmful particulate matter, and household kerosene use is associated with a higher risk of cancer, respiratory infections, asthma, tuberculosis, cataracts, and adverse pregnancy outcomes.