Experts confirm: "Burning coffee" effectively repels mosquitoes

A viral hack for repelling mosquitoes involves burning coffee grounds, which releases a smoke that is claimed to be effective at keeping the insects away. Mosquitoes rely on their sense of smell to locate areas to breed and feed, and the strong aroma of coffee disrupts their sensory receptors, leaving them disoriented and unable to find their target. While there is limited scientific evidence, some experts believe that burning coffee grounds works better than other DIY mosquito repellents due to the concentrated scent they release. To try the hack at home, simply burn dry coffee grounds on a heat-proof surface or use a candle wick in a glass of coffee.