Meanwhile, Aromaflage uses a mix of plant-based essential oils, vanillin and alcohol to create a “shield” that dissuades mosquitoes from landing on skin.

Customers will see "natural flavor" on the ingredients list instead of vanillin, the artificial ingredient that used to give the chocolates their vanilla flavor.

"It's gonna be pretty similar. There's no reason to think that there would be a lot of destruction of the vanillin," he says.