I seriously don't know. It wouldn't bother me except for me always wondering if I was going to startle it.

I'd go with the Hav-a-Heart trap. I don't think spraying would be that much of a danger. As others have said, you really have to scare the hell out of them before they spray. Of course, if you catch it, you have to figure out how to move the bugger someplace else. Or you could block its entry route then just let it out of the trap.

Try calling your local animal control folks. Skunks in America are one of the top rabies-carrying animals. Your skunk is probably a healthy Canadian skunk, but maybe the animal control people will be concerned enough to remove it. At the very least, they may have some better tips than I do.