The post's title of "Undergarments, Unmentionables, and Undesirables in Historical Romance," should give you a clue that she's writing about the realities and challenges of personal hygiene in centuries past.
Please read her informative and lighthearted article. Be sure to thank her for researching about those things we often ponder over, but rarely read about during a passionate romance story.
The Appropriate Use of You-Know-What, You-Know-Where and You-Know-How