"2020: the year when glory holes became a standard household equipment," one said
The website also includes many other tips such as wearing a mask, refraining from kissing, using a condom and washing your body before and after sex.
New York City health officials hinted at using glory holes in a recent three-page document without specifically naming them.
"Be creative with sexual positions and physical barriers, like walls, that allow sexual contact while preventing close face-to-face contact," the document said.
The British Columbia CDC also encourages "solo sex".
"You are your safest sex partner. Masturbating by yourself (solo sex) will not spread Covid-19."
Other top doctors are encouraging distant sexual pursuits, including masturbating in the same room as a partner or engaging in virtual sex.