Calpol Vapour Plug & Nightlight If your child is restless, then try using a soothing vapour plug, such as Calpol Vapour Plug & Nightlight. This is an electrical plug device that emits lavender & camomile vapours to help soothe & comfort babies & children, helping to promote a relaxing environment. The nightlight emits a soft blue light to help comfort the child & guide you in the room without disturbing the resting child. The Calpol Vapour Plug & Nightlight can be used safely in conjunction with any of the medicines from the makers of Calpol. Plugs into normal UK household sockets. Each refill lasts for up to 8 hours. Suitable for infants from 3 months.