The Poster You Can Smell

How Billie’s scratch-and-sniff turned passersby into promoters.

In partnership with

Introduction

Welcome to another exciting week!

Table of Contents

Sponsored Section

Marketing ideas for marketers who hate boring

The best marketing ideas come from marketers who live it.

That’s what this newsletter delivers.

The Marketing Millennials is a look inside what’s working right now for other marketers. No theory. No fluff. Just real insights and ideas you can actually use—from marketers who’ve been there, done that, and are sharing the playbook.

Every newsletter is written by Daniel Murray, a marketer obsessed with what goes into great marketing. Expect fresh takes, hot topics, and the kind of stuff you’ll want to steal for your next campaign.

Because marketing shouldn’t feel like guesswork. And you shouldn’t have to dig for the good stuff.

Best Ad of the Week

Billie – “Scratch-and-Sniff” Armpit Posters (2025)

In early 2025, Billie (a bodycare brand) placed giant interactive “scratch-and-sniff” posters across New York to launch its new coconut-vanilla deodorant. Passersby could physically engage with the ads by sniffing them. The curious, tangible experience spread fast on social media, becoming a viral moment for both brand and product.

Key Marketing Lessons

  • Make it interactive, not passive
    By allowing real, physical engagement—scratch and sniff—the ad turns observers into participants. This deepens memory and boosts shareability.

  • Turn sensory experiences into storytelling
    Scent is an often ignored sense in advertising. Billie used fragrance as the medium itself, not just a product attribute.

  • Use novelty to invite social proof
    People walking by filmed themselves scratching and sniffing—user-generated content that transformed posters into organic marketing.

  • Dare to break category conventions
    Most deodorant ads highlight sweat control or ingredients. Billie flipped the script: the ad is about scent and surprise, not just utility.

    Billie – “Scratch-and-Sniff” Armpit Posters (2025)

Sponsored Section

Marketing ideas for marketers who hate boring

The best marketing ideas come from marketers who live it. That’s what The Marketing Millennials delivers: real insights, fresh takes, and no fluff. Written by Daniel Murray, a marketer who knows what works, this newsletter cuts through the noise so you can stop guessing and start winning. Subscribe and level up your marketing game.

Weekly Tip

Use Patterns to Persuade

The human brain loves patterns—they make information easier to process and remember.

• Apply the “rule of three” in headlines or lists
• Repeat key phrases to reinforce your message
• Structure posts with a beginning, middle, and end

Patterns create rhythm, and rhythm makes your content more engaging and persuasive.

Weekly Challenge

Content Recycling Challenge

This week, give old posts new life:

• Pick 3 posts from at least 3 months ago
• Update the design, caption, or format (e.g. turn a static image into a reel)
• Repost them with a fresh hook or new angle
• Compare engagement with the original version

Refreshing proven ideas saves time while reaching new followers who never saw the originals.

Submissions + Feedback

Hope you enjoyed today’s post, if you know someone who may be interested, feel free to send it to them.

Also, if you want me to cover any specific subject on the next issue or share some feedback, feel free to reply to this email.

How was today's post?

Login or Subscribe to participate in polls.

Reply

or to participate.