Could this soap stop malaria?

Story highlights

  • The female anopheles mosquito killed 438,000 people in 2015 alone
  • Faso Soap uses natural ingredients to repel the deadly insect
  • The Burkina Faso-based start-up is taking the product through rigorous scientific testing
  • It could eventually be used to fight Zika

(CNN)It's just a little sting, so slight often the victim doesn't even feel it.

But it's administered by the most dangerous animal in the world -- the female anopheles mosquito.