I've heard that, too. Supposedly the very best honey for this purpose is Manuka honey. Some health food stores carry it, or you can get it on Amazon.
WebMD: Manuka Honey
"To be considered potent enough to be therapeutic, Manuka honey needs a minimum rating of UMF™ 10+... "
Used manuka honey on my FIL’s foot wound that wouldn’t heal (Hospice tried everything), manuka cleared it up in a week!