A 2017 Dutch campaign, called Crowbar, also attempted to train crows to pick up cigarette butts for a food reward, but officials decided to end the project in 2018 when they concluded that they couldnt get a clear picture of what the effects would be on the crows and the environment. Cigarette butts are among the most common forms of human-made pollution worldwide
Some countries with vape-free restrictions that were also identified include France, Germany, Greece, Jamaica, Nepal, Portugal, Slovakia, Spain, Turkey, Venezuela, and Vietnam 111
Possibly because of falling case numbers, the FDA announcement of new vaping products didn't even mention EVALI, which seems odd
But it's not just about the money
Sniffer dogs have different ways of signalling to their handler that they have detected an odour