“Do you enjoy sniffing old books? The creatives behind the SciShow YouTube channel made a video to examine “Why Do Old Books Smell So Good?”

Here’s more from Tech Times: “Older books have paper that contains a lot more cellulose and lignin, which come from the paper’s original source: trees. These chemicals degrade and release VOCs, releasing scents that remind us of almonds, vanilla and flowers.”

The video embedded above has drawn more than 400,000 views. Click here to check out an infographic on “the aroma of books.””