I just meant that you ingest bacteria and viri every time you breath. Surface contamination (not on filet mignon, but on hamburger) is another method of transport.
Yoghurt good; live oysters bad. (Though I have consumed both.)
And if you ride a motorcycle, you also ingest all kinds of insects, like gnats, no-see-ums, etc.
If spiders creep you out, don't read any farther...
And if you sleep with your mouth open, you have almost certainly ingested one or more spiders (they like warm, wet places).
If you really like salmon berries you have also eaten spiders. Itty-bitty spiders ply their trade on the occasional berry. Have you ever had a really, really bitter salmon berry? Hint: that bitterness wasn't the berry...