Speaking of protection, here's a question that probably never made it into Cosmopolitan magazine's dating advice columns: If you aren't willing or able to get tested or complete a two-week quarantine beforehand, are masks necessary during sexual encounters?

Canada's chief public health officer, Dr. Theresa Tham, became the latest among several health officials to suggest that when it comes to getting physical with a partner, people should wear masks and avoid kissing. New York City health officials also encouraged people to engage in positions facing away from one another to avoid the exchange of breathing particles. That's because a primary mode of transmission is mouth-to-mouth, so to speak — particles breathed out by someone infected, then inhaled by someone else.

While Sanchez agrees that masks do make sexual activity somewhat safer in that they reduce the exchange of viral particles, she says it's hard to measure effectiveness.

"Unfortunately, the answer is we don't know how much the risk goes down when you wear a mask while having sex," Sanchez says. "Ultimately, you can't have sex 6 feet apart. So it's going to be a high-risk activity whether or not you wear the masks and avoid kissing."