What makes some things seem to smell so strongly, while others seem to have no scent? Image by jeffreyw. But what is your nose actually picking up on when you smell pizza? Why can you smell it from far away when some things—like the chair you’re sitting in—you don’t seem to smell at all? More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.