Worldwide, about 2.9 billion people cook and heat using open fires and simple stoves burning solid biomass like wood, dung or agricultural residues. The inefficient combustion process causes high emissions of aerosols and gaseous pollutants evoking serious adverse impacts on human health and the environment. To mitigate these health risks and the associated detrimental climate active emissions, multiple initiatives have promoted the use of cleaner cooking technologies and fuels. In this context, the Indian government currently promotes the use of Liquefied Petroleum Gas (LPG). A large-scale program essentially covering the upfront costs of the new technology has increased the number of households with LPG stoves by more than 70 million since 2016. However, even after adopting LPG, a major fraction of the rural population continues to rely on solid biomass as their primary cooking fuel. One reason for the limited use of LPG could be that the health effects of traditional cooking are not sufficiently known to the households. We examine this hypothesis through an experiment providing randomized health information to 550 respondents with low LPG consumption in rural Rajasthan. Our results indicate that health information significantly increases the reported willingness to pay for LPG and has a strong positive impact on consumption behavior. We show that the causal mechanism indeed works via improved health knowledge, which is significantly higher among households receiving the health information. We also find suggestive evidence that knowledge-building regarding the health effects of cooking fuels should not target women alone.