More sniffing here!
Please take note that, for today, you are asked to collect smells from outside, for your dog to investigate. Given the pandemic this is NOT recommended, and you may not be able to travel far from home, for example.
Do not collect smells from public spaces! Instead, change your clothes before you greet your dog and then lay them out for your dog to investigate, or just allow them to give you the once over as soon as come in!
Alternatively, you might collect a very small amount of vegetation from just outside your property for your dog to investigate.
Wash your hands properly afterwards and once your dog has finished their exploration, dispose of any collections carefully. Disinfect the area.