Everything that didn't just come out of a sterilizer has its own microbiome.
...and even the stuff that just came out of a sterilizer still probably has some traces of microbastard left on it.
Those little dudes are literally everywhere.
There were some interesting articles on the urinary tract microbiomes in men who have sex with women. Bacteria can live in the low oxygen part of the urinary tract and could be traced between partners. Not STDs, in this case. Women can pass it to men, and vice versa. Interesting area of study. Bacteria are so adaptable!
Everything that didn't just come out of a sterilizer has its own microbiome.
...and even the stuff that just came out of a sterilizer still probably has some traces of microbastard left on it.
Those little dudes are literally everywhere.
There were some interesting articles on the urinary tract microbiomes in men who have sex with women. Bacteria can live in the low oxygen part of the urinary tract and could be traced between partners. Not STDs, in this case. Women can pass it to men, and vice versa. Interesting area of study. Bacteria are so adaptable!
Edit: found it!
https://www.newscientist.com/article/2365466-the-microbiome-inside-the-penis-can-be-altered-by-vaginal-sex/
One of the most terrifying experiments I'm aware of:
https://www.youtube.com/watch?v=plVk4NVIUh8
tldr: bacteria are INSANELY adaptable!