Try this if you suffer from a cough, asthma or nasal catarrh.
In an oil burner add water and 2 drops of essential oil of chamomile, 2 drops essential oil of basil and 2 drops of essential oil of benzoin.
Light a tealight and relax. The scent and properties of the essential oils will soon fill the room, will clear the atmosphere and help relieve not only the asthma or persistent cough and runny nose, but the tension they create as well. You can try it with babies too who suffer from colds and you will see that they will calm down very soon.