Yes, Disneyland uses a patented technology called the "Smellitzer" to pump scents throughout the park to enhance immersion and stimulate nostalgia. Invented by Imagineer Bob McCarthy, these machines use high-pressure air to blow scented oils through hidden vents. On Main Street, U.S.A., the air is frequently infused with the scent of vanilla and freshly baked cookies to evoke a sense of home and comfort. Inside attractions, the scents are more specific: Pirates of the Caribbean features a damp, salty "sea air" scent, while the Haunted Mansion ballroom occasionally smells like gingerbread during the holidays. In 2026, this "olfactory architecture" is a core part of Disney's "4D" storytelling, as scents are proven to trigger memories more effectively than sight or sound, making your visit feel more "real" and encouraging you to buy snacks like popcorn or churros that match the scents in the air.