They cite: https://pubs.aip.org/aip/pof/article/35/6/063319/2895950/How-microplastics-are-transported-and-deposited-in https://pubs.aip.org/aip/pof/article/35/6

They cite: https://pubs.aip.org/aip/pof/article/35/6/063319/2895950/How-microplastics-are-transported-and-deposited-in https://pubs.aip.org/aip/pof/article/35/6/063319/2895950/How... That doesn't have anything to do with the claim but instead also says: > Research shows humans might inhale about 16.2 bits of plastic every hour, which is equivalent to plastics used to make a credit card in an entire week. [3] 3 is: https://www.iqair.com/newsroom/microplastics-effects-on-air-pollution https://www.iqair.com/newsroom/microplastics-effects-on-air-... > In fact, you may be inhaling up to 16.2 plastic bits from clothes and plastic debris every hour. That’s the equivalent of a breathing in an entire credit card every week. That in turn cites: https://www.nature.com/articles/s41598-019-45054-w https://www.nature.com/articles/s41598-019-45054-w Where they look at the air in three apartments to determine that number, and that is actually based on the high end of the range. > All samples were contaminated with microplastics, with concentrations between 1.7 and 16.2 particles Additional considerations: I bet 16.2 micro particles per hour dosent even add up to a credit card per week, that seems to be something the air quailty company invented. How did the first paper pass peer review?