In order to smell, particles of said object must get in your nose for your odor receptors to work and detect the smell. You're welcome for the information
@The Landshark , of what legend do you speak?
@Frodrevo, the legend of how when you smell sh!t it's because it's up your nose
Or wondering about the welfare of the person in the stall moaning in pain but you read too many Japanese urban legends to know better.