[header] How to fine tune all of your five senses [title] Inhale strong smells every day. [step] Practicing what some doctors call " scent therapy " can engage new receptors in your nose, improving your sense of smell over time. Choose several strong smells that are pleasant to you and spend a few minutes every day sniffing each one. 
After a few weeks, your nose will be able to pick up on these smells more easily. When you start noticing a difference, practice with more smells.