Knowsmoke is a clean air company that specializes in developing rapid smoke detection solutions for shared, indoor spaces, particularly vehicles and homes. Led by a team of material scientists and engineers, Knowsmoke aims to standardize smoke detection in all shared spaces and raise awareness about thirdhand smoke exposure. Their flagship product, Ion, is the world's first rapid thirdhand smoke test kit for cars, providing a tool for detecting toxic tobacco residue in vehicle interiors. The company combines advanced material science with market demand to offer transparency in automotive retail and hospitality, with a focus on protecting health-conscious consumers and promoting a health-centered business model.