Doesn't nosework in Canada use different scents than nosework in the US? Seems to me I remember at least one difference.
Yes, NACSW uses Birch, Clove, and Anise. SDDA uses Wintergreen, Pine, and Thyme.
The methods, and techniques used can be interchangeable since it's only the scents that are different.
There are some handlers who compete in both venues, and successfully trained their dogs on all 6 scents.