3 ms·I assume we eat lots of dust especially if you live in a dry climate next to a desert.by adrr 4y agoI assume we eat lots of dust especially if you live in a dry climate next to a desert.sbaiddn 4y agoBut its not nanoadrr 4y agohttps://academic.oup.com/toxres/article/11/4/565/6645393 https://academic.oup.com/toxres/article/11/4/565/6645393 Has the sources of silica nano particles.