In a study conducted by the Toronto Rehabilitation Institute, researchers showed study subjects a video designed to make them feel queasy. One group smelled rose oil – another smelled nothing. Well, the group that sniffed rose oil felt 50% less nauseous than the other group. The researchers say certain scents can conjure up powerful emotions. And if that emotional response is positive, it distracts the brain enough to ease motion sickness. And you don’t necessarily need rose oil. Any pleasant scent will do the trick. The researchers say you can start with your favorite cologne or perfume – which hopefully elicits a positive sensory response for you.