The World's First Spliff-Sniffing Billboard

July 1 didn’t just mark Canada’s 150th birthday — it also was the one-year mark until the nationwide legalization of cannabis. Smoking accessory retailer Prohibition took the opportunity to have fun with the milestone, by placing an interactive billboard in the nation’s capital that detected nearby marijuana smoke. Experiential advertisement created by Bleublancrouge, Canada for Prohibition, within the category: Tobacco.