Dust in your home can include viruses, dust mite faeces, mould spores, more: Dyson Global Dust Study

As per the study, 1 in 5 participants were uncertain about the potential link between household dust and viruses and other microbial life.

from http://www.firstpost.com/tech/news-analysis/dust-in-your-home-can-include-viruses-dust-mite-faeces-mould-spores-more-dyson-global-dust-study-9433181.html