For new product launches, air fresheners become mini sensory hubs: a dedicated fragrance that reflects the product concept and a QR code that links to landing pages, videos, technical data sheets, or pre-order offers. Each scan transforms a simple gift into a measurable action, while the scent keeps the memory of the launch alive for weeks inside the car.

Hanging from the rearview mirror, the air freshener is always visible and the QR code is always within reach of your smartphone, creating a constant brand presence during trips, journeys, and stops. The scent works on an emotional level, while the graphic design and digital reference consolidate brand memory and encourage repeated interactions over time.

Perfumers with QR codes connect physical gadgets to websites, e-commerce sites, coupons, digital menus, contact forms, or review requests, transforming every car into a permanent access point to the brand's digital universe. Agencies can design complete funnels where contact takes place offline, but conversion and tracking are managed online with clear metrics.

Sending out periodic air fresheners with themed fragrances and dedicated QR codes allows you to build recurring loyalty programs, where each shipment reactivates both the olfactory memory and a new digital call to action (promotions, surveys, exclusive content). This multisensory approach increases the frequency of contact, strengthens the emotional bond, and prolongs the relationship well beyond the single campaign.

During events, trade shows, test drives, and roadshows, scent diffusers become a sensory takeaway that continues to work even after the event is over. The QR code allows the conversation to continue online (follow-up, newsletter subscription, catalog downloads), while the fragrance keeps the memory of the in-person experience alive.

Each fragrance can be thought of as a chapter in a brand story, with the QR code unlocking related content: emotional videos, narrative mini-sites, quizzes, or guided tours. Agencies thus build campaigns where scent, visuals, and digital content tell the same story, increasing engagement and the memorability of the message.

The use of QR codes allows agencies to monitor scans, visits, conversions, and interaction time, providing them with objective data on the effectiveness of the multisensory campaign. By cross-referencing these metrics with the duration of use of the scent diffusers and fleet coverage, it is possible to demonstrate a high ROI compared to traditional visual-only gadgets.