Commercial petroleum products such as gasoline, kerosene and fuel oils are complex mixtures of hundreds of different hydrocarbons. Dermal exposure to such agents may lead to damaging effects on the skin barrier and may causes local effects like skin irritation, inflammation, skin corrosion and burn like injuries. Although there have been reports on effect of dermal exposure to kerosene, to the best of our knowledge no case has been reported regarding the exposure of oral mucosa to kerosene. Here, we present a unique case of angioedema of lips caused due to use of kerosene as a mouthwash.