Acetophenone is a naturally occurring fragrant substance with a sweet, floral scent that is found in a number of perfumes. According to the Fragrance Conservatory, “different industries and manufacturers may use different names for the same ingredient.”

You can find acetophenone on labels with names like acetylbenzol, ethanone, and 1-phenylethanone. But no matter what name this perfume ingredient goes by, it’s going to attract mosquitoes.

— Read more in This One Perfume Ingredient Might Be The Reason You’re A Mosquito Magnet at Suggest.

An international team of researchers has discovered an incredible way some viruses can alter the smell of their host in order to attract mosquitoes and spread to the next person. The study revealed Dengue and Zika viruses can alter a host’s skin microbiome to enhance the volume of odor molecules that draw in mosquitoes.

— Read more in How viruses can change your body odor to attract mosquitoes at New Atlas.

Female mice that are heavily pregnant or have recently given birth produce a banana-smelling chemical in their urine that stresses out males, possibly to stop them from killing their pups.

Jeffrey Mogil at McGill University in Montreal and his colleagues discovered this behaviour by accident. “We were doing experiments with pregnant female mice and noticed that male mice that were being used for other experiments in the same room were acting a bit crazy,” he says.

— Read more in Female mice release banana-scented urine when pregnant to deter males at New Scientist.