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Scent has always been the ungainly stepchild of media consumption, with even the brilliant Smell-O-Vision quickly dying, mostly due to the threat that Marlon Brando might star in one. Reviving the dream, with you at the controls: Olly.

An open-source schematic from a London-based team that you can easily make right now (do it! hop on this nose-train!), Olly's simple peripheral plugs right into your comp, then gently emanates any fragrance you desire when prompted by virtually any online notification -- from a Tweet, to a Facebook "like", to "your train running late", even "changing weather patterns", although if you're set up for the latter, the former's just doubling up. Beyond these very practical suggestions, you could, say:

• Figure out what despair smells like, then use it as a notice of incoming eHarmony emails.
• Make it smell like stripper perfume anytime you receive correspondence from the girl who drove you to eHarmony.
• Fill the room with the smell of bacon when literally anything happens at all.

The Olly guys are working on a purchasable model, but for now the devices are amazingly simple to build on your own, with just four components you can pump out on a 3D printer. To see what you could be inhaling, watch the video interview with one of the creators above, then get ready for what hopefully won't be your Last Tango with the smell of...oh god, butter and fat-man sex.

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Check out that interview, then take a whiff at OllyFactory.com