Insider asked 13 leading public health experts what they were up to with the new variants. Nobody has a double mask. The coronavirus is developing rapidly. With several new, perhaps contagious, variants circling the world, experts said they are cracking down on their own precautions against viruses more than ever: cutting down trips to the grocery store, canceling flights and avoiding the crowds. But while Dr. Anthony Fauci has said it is “common sense” for people to double-mask at the moment, most experts say they don’t change the way they mask. “When you have a decent mask, you need something that seals it around your nose and cheeks under your chin,” said Don Milton, a virologist at the University of Maryland. “It’s best to find one that works for you.” Insider interviewed Milton along with a dozen other top public health experts, including doctors, virologists, mask makers, and environmental engineers. Neither of them have said so far that they are doing double masking, but that doesn’t mean you shouldn’t. Double masking can still come in handy, especially if you don’t have a mask that filters or fits well.