Human - associated bacteria disperse into and throughout the built environment by three primary mechanisms: (1) direct human contact with indoor surfaces; (2) bioaerosol particle emission from our breath, clothes, skin and hair; and (3) resuspension of indoor dust containing previously shed human skin cells, hair and other bacteria - laden particles. (peerj.com)
The researchers collected samples of indoor dust from 11 homes in North Carolina and tested extracts from the samples in a mouse pre-adipocyte cell model, 3T3 - L1 cells, often used to test compounds for potential effects on the accumulation of triglycerides, a type of fat. (sciencedaily.com)
And they wind up in indoor dust that can be inhaled, ingested, or absorbed through the skin. (sciencedaily.com)