The goal of this clinical trial is to learn if lavender essential oil chest wraps relieve cough in infants with bronchiolitis compared to standard care. Furthermore, the researchers will evaluate if breathing difficulties, nighttime awakening and impact on parents will be improved by the lavender oil chest wraps. Infants will be randomized to receive standard care with the addition of lavender oil chest wraps or to receive standard care alone. The study will take place in two locations in Switzerland, at the Geneva University Hospital and the Fribourg Cantonal Hospital.