The system boasted heat and flame detectors, fire retardant, a 2,500-gallon sprinkler system to soak the property and humidify the air for an hour, and autonomy from the power grid.

This natural humidifying system arises from the increased perimeter of the nose bones in arctic seals, the team reports, like jagged coastlines with many bays and ports.

The researchers pinched the vocal cords together and pumped warm, humidified air through them.

In a hot and humidified greenhouse, Dr Aaron Davis parts the branches on a lanky plant to reveal a cluster of dark red berries.

There are newer models that can deliver heated or humidified air, depending on the patient’s preferences, and there are small travel models as well.