Prevent costly damage to your duvet by setting your washing machine to a gentle cycle, using only as much detergent as you would for bedding, and utilize warm water. Once the initial rinse is complete, reset the machine for an extra rinse before beginning the spin cycle.
The human nose is capable of detecting over 1 trillion smells.
The human nose contains around 400 types of scent receptors that can detect odors. These receptors are capable of detecting at least 1 trillion different odors. However, human beings are only able to differentiate about 10,000 odors from each other.