I've never heard of anyone "scenting" an enclosure. I doubt that would change the BPs behavior in any way. If he's going to be nippy, he'll be nippy. If he's going to be an angel, he'll be an angel regardless of his familiarity with your scent.
Also, you're right about not handling him after eating, but it is suggested that you do not handle them for 48hrs after they eat, not 24hrs. If they become stressed after they eat, they regurgitate their prey as an escape method. It's best to let them settle and digest their food before stressing them out by handling them.
Check out the care sheet on this site and good luck!
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