There's a microbial, particulate, and chemical cloud surrounding each one of us that is like the one around Pig Pen in the Peanuts comics. It's called the exposome. Researchers from the Stanford University of Medicine found that we each have our own distinct personal cloud - which is everything we're exposed to both indoors and outdoors (pets, rain, household chemicals, air pollution, pesticides, etc.), and what we use on our bodies. It is influenced by geographical regions of where a person lives, works, and travels, as well as a person's lifestyle.
The study followed the personal exposomes of 15 individuals for varying times and over 66 geographical locations (one of the researchers was followed for more than 2 years, during which time he traveled extensively). This was done by having the individuals wear a sensitive air filtering device - which collected what was in the air (environmental airborne exposures). The results showed that each person is exposed to thousands of species (plant pollen, bacteria, fungi, viruses, etc.) and chemicals. From Science Daily:
We are all exposed to a vast and dynamic cloud of microbes, chemicals and particulates that, if visible, might make us look something like Pig-Pen from Peanuts.
Using a re-engineered air-monitoring device, scientists from the Stanford University School of Medicine have peered into that plume and discovered a smorgasbord of biological and chemical minutia that swirl in, on and around us. Their findings show, in unprecedented detail, the variety of bacteria, viruses, chemicals, plant particulates, fungi, and even tiny microscopic animals that enter our personal space -- a bombardment known as the human "exposome." ...continue reading "There Is A Personal Cloud Around Each Person"