is this something i need to make some htaccess rule for?
Honestly, I wouldn’t really worry about it. The cookie is pretty small and it won’t result in a measurable improvement. If you do want to tackle it, you need to move your CDN to a different domain since the cookie is set on nybodyart.com. instead of cdn.nybodyart.com you would need to do something like www.nybodyartcdn.com so it’s a completely different domain.