And you and I have millions of microbes, too.
Ed Yong’s 2016 book, I Contain Multitudes is a great read.
NYT book review, which should have mentioned that it quoted Sting:
Reader, as you read these words, trillions of microbes and quadrillions of viruses are multiplying on your face, your hands and down there in the darkness of your gut. With every breath you take, with every move you make, you are sending bacteria into the air at the rate of about 37 million per hour — your invisible aura, your personal microbial cloud. With every gram of food you eat, you swallow about a million microbes moreBlockquote