You may be interested (or possibly horrified) to discover you ingest and inhale thousands of tiny life forms on a daily basis.
The air and surfaces around you are home to multitudes of bacteria, fungi, viruses, mites, algae and protozoa. Your skin isn’t much better, with a complex ecosystem of organisms called commensals which aren’t necessarily good or bad, but will shift in their composition depending on where you live, the products you use and the pets you have.
